Current Events > 6÷2(1+2)=?

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P4wn4g3
12/11/18 4:19:50 PM
#102:


Parentheses don't have to be solved first.
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polopili
12/11/18 4:21:27 PM
#103:


Tyranthraxus posted...
polopili posted...
When you stick a number in front of a parentheses like that without an operand, you're supposed to treat it first after the inside of parentheses.

How are people this bad at math

Where did things go so wrong?

"Always parentheses first, then exponents. Oh unless you have a regular number outside a parentheses in which case do whatever the fuck you want. Distribute them first for all anyone cares. Nobody said Parentheses had to be resolved first."


You're supposed to make the parentheses disappear before doing the divison.

62(1+2)
62(3)
3(3)
9

makes you do the divisions while the parentheses are still there.
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P4wn4g3
12/11/18 4:23:13 PM
#104:


It literally doesn't matter what order you do the parentheses in so long as you treat everything inside uniform.
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polopili
12/11/18 4:25:15 PM
#105:


P4wn4g3 posted...
It literally doesn't matter what order you do the parentheses in so long as you treat everything inside uniform.

Wrong. You're supposed to make them disappear, that what ''treating parentheses first'' means.
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markconigliaro
12/11/18 4:26:34 PM
#106:


polopili posted...
Tyranthraxus posted...
polopili posted...
When you stick a number in front of a parentheses like that without an operand, you're supposed to treat it first after the inside of parentheses.

How are people this bad at math

Where did things go so wrong?

"Always parentheses first, then exponents. Oh unless you have a regular number outside a parentheses in which case do whatever the fuck you want. Distribute them first for all anyone cares. Nobody said Parentheses had to be resolved first."


You're supposed to make the parentheses disappear before doing the divison.

62(1+2)
62(3)
3(3)
9

makes you do the divisions while the parentheses are still there.


62(1+2)
62*3
3*3
9

There, parenthesis are gone. x(y) is the exact same as x*y. It's just notation.

Parenthesis in the order of operations says do whatever is INSIDE the parenthesis, when all that's inside the parenthesis is a single number 3, the parenthesis operation is done, time to move on. The 2 is not inside the parenthesis so you do that in the multiplication step.
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P4wn4g3
12/11/18 4:33:24 PM
#107:


polopili posted...
P4wn4g3 posted...
It literally doesn't matter what order you do the parentheses in so long as you treat everything inside uniform.

Wrong. You're supposed to make them disappear, that what ''treating parentheses first'' means.

Do the math, you'll see I'm right.
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polopili
12/11/18 4:38:10 PM
#108:


markconigliaro posted...
polopili posted...
Tyranthraxus posted...
polopili posted...
When you stick a number in front of a parentheses like that without an operand, you're supposed to treat it first after the inside of parentheses.

How are people this bad at math

Where did things go so wrong?

"Always parentheses first, then exponents. Oh unless you have a regular number outside a parentheses in which case do whatever the fuck you want. Distribute them first for all anyone cares. Nobody said Parentheses had to be resolved first."


You're supposed to make the parentheses disappear before doing the divison.

62(1+2)
62(3)
3(3)
9

makes you do the divisions while the parentheses are still there.


62(1+2)
62*3
3*3
9

There, parenthesis are gone. x(y) is the exact same as x*y. It's just notation.

Parenthesis in the order of operations says do whatever is INSIDE the parenthesis, when all that's inside the parenthesis is a single number 3, the parenthesis operation is done, time to move on. The 2 is not inside the parenthesis so you do that in the multiplication step.


This part is meant to be interpreted that it multiplies the parentheses, otherwise why not add a * in front?
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Tyranthraxus
12/11/18 4:41:53 PM
#109:


polopili posted...
This part is meant to be interpreted that it multiplies the parentheses, otherwise why not add a * in front?

It's shorthand. 3(3) and 3*3 are equivalent statements.
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DoGCyN
12/11/18 4:42:13 PM
#110:


Great topic.

answer is still 9
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markconigliaro
12/11/18 4:45:00 PM
#111:


polopili posted...
This part is meant to be interpreted that it multiplies the parentheses, otherwise why not add a * in front?


Sure

62*(1+2)
62*3
3*3
9

These are just different ways to write the same thing. There is no interpreting anything, they're all exactly the same. As for why not add an *, because it does literally nothing but make the equation longer. Like I can write (1+4)+(5+2), but why? That's unnecessary padding to the equation, just write 1+4+5+2, same thing.
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The-Apostle
12/11/18 4:59:52 PM
#112:


I got 9 just by looking at the problem. >_>
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UnholyMudcrab
12/11/18 5:00:39 PM
#113:


Alright, 100+ posts. You guys really can't help yourselves at all.
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Kineth
12/11/18 5:02:39 PM
#114:


Tyranthraxus posted...
polopili posted...
This part is meant to be interpreted that it multiplies the parentheses, otherwise why not add a * in front?

It's shorthand. 3(3) and 3*3 are equivalent statements.


Yeah, well the quantity is 1/3 if you're gonna treat it as a separate number at that point, especially considering the original number you're trying to orphan it from is 1/2 and not simply 2.
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P4wn4g3
12/11/18 5:08:03 PM
#115:


Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.
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polopili
12/11/18 5:30:06 PM
#116:


Although there are no conventions for a badly written formula like that, it is not commonly simply shorthand to *. Putting a number in front of a parentheses or a variable means you should treat it like multiplicative constant. Once you start doing more complex math, it is absolutely needed to avoid putting parentheses and brackets everywhere.

Let's say we replace 3 inside the parentheses with an x variable.

You say 32x would result in (3x)/2 since not putting a * sign is the same as *?

Just like a/bc does not result in (a/b)c.
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P4wn4g3
12/11/18 5:33:04 PM
#117:


polopili posted...
Just like a/bc does not result in (a/b)c.

a/bc isn't necessarily a/(bc)
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Tyranthraxus
12/11/18 5:43:51 PM
#118:


P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer
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P4wn4g3
12/11/18 5:45:44 PM
#119:


Tyranthraxus posted...
P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer

You can make an argument for 9 or 1 being right. 9 would likely be accepted by majority, but this equation wouldn't fly in actual mathematics.
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Tyranthraxus
12/11/18 5:55:00 PM
#120:


P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer

You can make an argument for 9 or 1 being right. 9 would likely be accepted by majority, but this equation wouldn't fly in actual mathematics.

You are straight wrong. It's a valid algebraic equation and has only one answer -- 9
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P4wn4g3
12/11/18 5:56:25 PM
#121:


Tyranthraxus posted...
P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer

You can make an argument for 9 or 1 being right. 9 would likely be accepted by majority, but this equation wouldn't fly in actual mathematics.

You are straight wrong. It's a valid algebraic equation and has only one answer -- 9

Refer to Anteater's earlier points about the usage of the division symbol.
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Tyranthraxus
12/11/18 5:57:36 PM
#122:


P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer

You can make an argument for 9 or 1 being right. 9 would likely be accepted by majority, but this equation wouldn't fly in actual mathematics.

You are straight wrong. It's a valid algebraic equation and has only one answer -- 9

Refer to Anteater's earlier points about the usage of the division symbol.

Refer to Wolfram Alpha
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P4wn4g3
12/11/18 5:59:33 PM
#123:


Tyranthraxus posted...
P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Tyranthraxus posted...
P4wn4g3 posted...
Kineth posted...
well the quantity is 1/3 if you're gonna treat it as a separate number at that point

This is the problem with the question posed. The division symbol doesn't inherently state whether order of operations applies, which means it could be 1/3 or it could be 3. So TC would need to clarify.

Rewrite all division as multiplication of reciprocal, rewrite all subtraction as addition of the negated value and you will always arrive at the right answer

You can make an argument for 9 or 1 being right. 9 would likely be accepted by majority, but this equation wouldn't fly in actual mathematics.

You are straight wrong. It's a valid algebraic equation and has only one answer -- 9

Refer to Anteater's earlier points about the usage of the division symbol.

Refer to Wolfram Alpha

As I said, it would be the more widely accepted answer. It's what I argued earlier after all.
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The-Apostle
12/11/18 6:00:12 PM
#124:


Anything other than 9 would be wrong on a test.
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Medussa
12/11/18 6:07:43 PM
#125:


The-Apostle posted...
Anything other than 9 would be wrong on a test.


this would never appear on a test, because it's not real syntax.

it's been engineered to get the exact argument this thread had provided.
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Tyranthraxus
12/11/18 6:10:21 PM
#126:


Medussa posted...
The-Apostle posted...
Anything other than 9 would be wrong on a test.


this would never appear on a test, because it's not real syntax.

it's been engineered to get the exact argument this thread had provided.

It absolutely would appear on a test if it was testing your understanding of OOO
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P4wn4g3
12/11/18 6:12:04 PM
#127:


Tyranthraxus posted...
Medussa posted...
The-Apostle posted...
Anything other than 9 would be wrong on a test.


this would never appear on a test, because it's not real syntax.

it's been engineered to get the exact argument this thread had provided.

It absolutely would appear on a test if it was testing your understanding of OOO

No, division would be represented with / on a test.
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yoshifan1
12/11/18 6:18:56 PM
#128:


62(1+2)= 9

Syntactically, it is identical to 6 / 2 x (1 + 2). Only operations within the parenthesis are part of the group. When multiply a number against a group in parenthesis, the multiplication sign can be omitted as it is implied. For example, 6 x 3, 6(3), 3(6), and (6)(3) are all the same syntactically. Then when all groups are solved the next step is exponents, left to right, then multiplication and division left to right with the two operations having the same priority, and finally addition and subtraction left to right with again the two operations having the same priority.
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Kinny100
12/11/18 6:20:01 PM
#129:


7 people
explain yourselves
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KobeSystem
12/11/18 6:20:26 PM
#130:


KobeSystem posted...
Anyone who thinks it's not 9 should probably be wearing a waterproof wristwatch calculator at all times

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Anteaterking
12/11/18 6:22:40 PM
#131:


yoshifan1 posted...
Syntactically, it is identical to 6 / 2 x (1 + 2).


Only if you take that as your convention.
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A_Good_Boy
12/11/18 6:23:05 PM
#132:


I can see how people would accidentally get 1. I don't see how they're getting 7.
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mobile_jukester
12/11/18 6:24:16 PM
#133:


A_Good_Boy posted...
I can see how people would accidentally get 1. I don't see how they're getting 7.


Youre on CE, bro.
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jukester
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P4wn4g3
12/11/18 6:32:19 PM
#134:


Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z
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Tyranthraxus
12/11/18 6:35:05 PM
#135:


P4wn4g3 posted...
Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z

An equation with three variables has infinite solutions. You require 1 unique equation per variable to arrive at a single solution.
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P4wn4g3
12/11/18 6:37:41 PM
#136:


Tyranthraxus posted...
require 1 unique equation per variable to arrive at a single solution.

there's a real answer to this.
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Life Sympathy
12/11/18 6:37:55 PM
#137:


Uncaught TypeError: 2 is not a function at <anonymous>:1:4
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Medussa
12/11/18 6:38:56 PM
#138:


Tyranthraxus posted...
P4wn4g3 posted...
Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z

An equation with three variables has infinite solutions. You require 1 unique equation per variable to arrive at a single solution.


since it limits the variables to positive integers, it might have a unique solution (or be another troll question and not have one at all). but I don't think it can be solved mathematically, only brute-forced.
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ohnoitschris
12/11/18 6:40:09 PM
#139:


wGv3HjY
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P4wn4g3
12/11/18 6:40:21 PM
#140:


Medussa posted...
Tyranthraxus posted...
P4wn4g3 posted...
Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z

An equation with three variables has infinite solutions. You require 1 unique equation per variable to arrive at a single solution.


since it limits the variables to positive integers, it might have a unique solution (or be another troll question and not have one at all). but I don't think it can be solved mathematically, only brute-forced.

It can be.
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Medussa
12/11/18 6:41:23 PM
#141:


P4wn4g3 posted...
It can be.


i'll take your word for it. because if it'll take what I think it'll take, I don't wanna. that's nasty.
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Squall28
12/11/18 6:44:01 PM
#142:


This damn topic is why America sucks at math. Order of operations is an arbitrary rule to keep people on the same page. That's it.
It doesn't do anything for your math skills. People over obsess over it.
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P4wn4g3
12/11/18 6:45:25 PM
#143:


Squall28 posted...
This damn topic is why America sucks at math. Order of operations is an arbitrary rule to keep people on the same page. That's it.
It doesn't do anything for your math skills. People over obsess over it.

technically all of math is arbitrary rules to keep people on the same page. that's the exact idea behind it.
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Kinny100
12/11/18 6:48:44 PM
#144:


P4wn4g3 posted...
Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z


go f yourself troll. this is a phd level problem. if we're limited to +integers, the answers are:
apple = 15447680210874616 6441951315019919837485664325669565431700026 634898253202035277999

banana =
368751317941299998271 9781156522547482549297996897197099628313 7471637224634055579

pineapple =
43736126779286972 5786125260237139015281653755816161361862143799 3378423467772036

https://www.quora.com/How-do-you-find-the-positive-integer-solutions-to-frac-x-y+z-+-frac-y-z+x-+-frac-z-x+y-4/answer/Alon-Amit
https://plus.google.com/+johncbaez999/posts/Pr8LgYYxvbM
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zachflash
12/11/18 6:51:10 PM
#145:


I got 1. Would love to ask my math teachers in the past this question, since it's been so long, lol.

3lHkmYU
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P4wn4g3
12/11/18 6:51:28 PM
#146:


Kinny100 posted...
P4wn4g3 posted...
Kinny100 posted...
7 people
explain yourselves

First solve this
9Rxfj3z


go f yourself troll. this is a phd level problem. if we're limited to +integers, the answers are:
apple = 15447680210874616 6441951315019919837485664325669565431700026 634898253202035277999

banana =
368751317941299998271 9781156522547482549297996897197099628313 7471637224634055579

pineapple =
43736126779286972 5786125260237139015281653755816161361862143799 3378423467772036

https://www.quora.com/How-do-you-find-the-positive-integer-solutions-to-frac-x-y+z-+-frac-y-z+x-+-frac-z-x+y-4/answer/Alon-Amit
https://plus.google.com/+johncbaez999/posts/Pr8LgYYxvbM

y so salty
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Kinny100
12/11/18 6:52:06 PM
#147:


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Anteaterking
12/11/18 6:52:50 PM
#148:


Tyranthraxus posted...
An equation with three variables has infinite solutions. You require 1 unique equation per variable to arrive at a single solution.


Domain
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MarqueeSeries
12/11/18 7:27:17 PM
#149:


P4wn4g3 posted...
(1+2) is not in the denominator by any indicated operator in this equation. I'm not sure why you are putting it there.

Yeah it is. 2(1+3) is all one term, and it's the denominator
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FL81
12/11/18 7:39:53 PM
#150:


I'm actually having difficulty trying to figure out how anyone could possibly arrive at 7 as an answer here

the correct answer is 9 btw
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A_Good_Boy
12/11/18 7:44:04 PM
#151:


zachflash posted...
I got 1. Would love to ask my math teachers in the past this question, since it's been so long, lol.

3lHkmYU

You didn't even copy the original problem down correctly ffs
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