48÷2(9+3) = ????

Your Answer?


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It doesn't. They are attempting to solve the problem as if 9 and 3 were unlike terms that cannot be simplified within the grouping symbol. Personally, I blame the public school system.

Just like a negro to revel in his ignorance, and disregard simple reasoning.
 
Now you are doing the correct thing: asking. any number in front of the parentheses must be distributed across it. Do not collect $200, do not pass go.

2 = 48/2(12) = 48/2(9+3) = 48/(18+6) = 48/24 = 2
you have to solve that equation before any division can occur.

2 is separate from the parentheses. Otherwise it would be (2(9+3))
 
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Now you are doing the correct thing: asking. any number in front of the parentheses must be distributed across it. Do not collect $200, do not pass go.

2 = 48/2(12) = 48/2(9+3) = 48/(18+6) = 48/24 = 2
you have to solve that equation before any division can occur.

You are distributing the wrong number. The number to be distributed is not 2, it is 48 divided by 2 which is 24.
 
Now you are doing the correct thing: asking. any number in front of the parentheses must be distributed across it. Do not collect $200, do not pass go.

2 = 48/2(12) = 48/2(9+3) = 48/(18+6) = 48/24 = 2
you have to solve that equation before any division can occur.

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You may be right but some scientific calcs and online problem solvers that allow variations of the ÷ and the / set up the problem different which gets 2 different answers.

48÷2, 48/2, 48*½, 48(2) and 48(1+1) etc... all evaluate the same.

Whether I do it by hand or with a TI-Nspire CAS, the correct answer is 288.

 
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You cant do that if theres a division sign in front of it
ok. let's use your logic :)
Do you agree that a division sign is the same as a fraction?
Do you agree that 48 is the numerator?
If so, do you agree that 2(9+3) is the denominator?
If not, why not?

You can not take 2 numbers being multiplied by each other and separate them.

48/2(9+3) is not the same as (48/2)(9+3).
It is the same as 48/[2(9+3)] :yes:
 
No. Enter both into a scientific calculator and you will get two different answers.

48÷2(9+3) is asking you to take 48 over 2(9+3) in which you will get 48/24 which equals 2.

48/2(9+3) is asking you to put 48/2 and multiply it by (9+3) which you get 24 multiplied by 12 which equals 288.

Guaranteed.

From http://web2.0calc.com/

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That calculator has the '÷' symbol only. Now show me a scientific calculator that has BOTH '÷' and '/' so I can try what you're saying.
 
:dunno: Where's the damn pictures? :dunno:
That's the thing. This requires BRAIN power. a sharp mind is always better than a machine. The machine was created by human beings, but it can not think. Using a graphing calculator requires knowing how to use it. Not as simple as typing in an equation. Have to go back to grade school knowledge.

Also, for the braniacs in this thread: grammar is not spelled as 'grammer'
 
Again (9+3) is alone, its cut off from 48÷2 because its in a parentheses.
You solve and get 12. Now you put it in a position to be multiplied because 2(12)

Theres no difference between 2(9) + 2(3) = 24 and 2(12) = 24
You only do that though when 2 is included inside the parentheses with (9+3) i.e. (2(9+3)). If it was like that, then you would divide last. You cant use distributive property with 2 only when the number in front of the () is 48÷2

48-2(9+3) is when its ok to do it too
you get 48-(18+6). Thats only because it has a minus sign. Same if it had a plus sign.

But since Multiplication and Division are inverse, you have to respect the 48÷ before multiplying anything because M and D hold no rank over each other and you must solve from left to right.
 
For those that say 2, yall saying Excel, Math.com, Google, TI-8X are all wrong

the equation is being entered as (48/2)(9+3) the way the equation is written it is 48÷(2(9+3)).

cats are getting real upset and emotional, but I have posted proof twice

now here is a vid *NOT ME IN VIDEO* FOUND ON ANOTHER FORUM


BUT IT IS INTERESTING TO NOTE HOW SIMILAR THE ANSWER/RATIONALES ARE ACROSS SO MANY FORUMS
 
Again (9+3) is alone, its cut off from 48÷2 because its in a parentheses.
You solve and get 12. Now you put it in a position to be multiplied because 2(12)

Theres no difference between 2(9) + 2(3) = 24 and 2(12) = 24
You only do that though when 2 is included inside the parentheses with (9+3) i.e. (2(9+3)). If it was like that, then you would divide last. You cant use distributive property with 2 only when the number in front of the () is 48÷2

48-2(9+3) is when its ok to do it too
you get 48-(18+6). Thats only because it has a minus sign. Same if it had a plus sign.

But since Multiplication and Division are inverse, you have to respect the 48÷ before multiplying anything because M and D hold no rank over each other and you must solve from left to right.

You have to simplify. A calculator wont do that for you..

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48÷2, 48/2, 48*½, 48(2) and 48(1+1) etc... all evaluate the same.

Yep. I used a problem solver also and using / vs the traditional division sign I got two different answers but without explanation it doesn't mean much. I might post two screencaps to show what I mean.


Edit: Actually somebody has a video of it:

 
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For those that say 2, yall saying Excel, Math.com, Google, TI-8X are all wrong


No sir I stand corrected. You can't just jump from doing the problem in the parentheses to dividing the other numbers then bouncing back to the number in the parentheses.

Also talk to your TI calculator buddies, they're confused to.
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Yes I did, dummy. :rolleyes:


You have to Simplify. This equation from PurpleMath does the same thing.. The number outside the Parentheses is multiplied by it before you work the problem.

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3 is multiplied by the sum of the parentheses, as 2 is in the OP's problem.

In this example after you solve whats within the parenthesis, the next ranking operation, when solved as written is multiplication, followed division.

THEN the only operation that remains is subtraction.

In the OP's problem, division is the first operation that occurs after solving within the parenthesis. Then multiplication.
 
Brothers the answer is 2 I teach Adult Education math. This problem covers the order of operations in math. For Adults it is a bitch to work out if you don't know the order of operations. When you use the calculator and just punch the numbers in without knowing the order of operations you will come up with 288 which is incorrect.

Good ass post got folks in here thinking like a motherfucker. Remember when you were taking math and thinking what the hell do I need to know this for. LOL!!
:yes: Please, please, PLEASE keep teaching. The black community needs ya!!! LOL! :yes:
If the problem was written 48 divided by 2*(9+3) then there would not be an argument.
But it IS!!! You had it right the first time. You should not doubt yourself :dunno:
easy shit 288 but im in college right now.
stay in school and take another algebra class while you are at it :)
 
In this example after you solve whats within the parenthesis, the next ranking operation, when solved as written is multiplication, followed division.

THEN the only operation that remains is subtraction.

In the OP's problem, division is the first operation that occurs after solving within the parenthesis. Then multiplication.

You Simplify first, and that doesnt have shit to do with the Order of Operations. That comes after.

 
You got it wrong homie.

48÷2(9+3)

Parentheses first

(9+3) = 12

THEN YOU HAVE 48/2(12)

After that you work left to right

24(12)

288

Multiplication and division are the same, therefore you work right to left after you do the parentheses.

Least that's what I recall lol. I could be wrong.

This is what I remember too
 
ok. let's use your logic :)
Do you agree that a division sign is the same as a fraction?
Do you agree that 48 is the numerator?
If so, do you agree that 2(9+3) is the denominator?
If not, why not?

You can not take 2 numbers being multiplied by each other and separate them.

48/2(9+3) is not the same as (48/2)(9+3).
It is the same as 48/[2(9+3)] :yes:

2(9+3) isnt the numerator because it isnt fully contained. 48÷ only reaches out to the close number. If it was 48÷() and you input 2(9+3) inside the () then it can contain all of it

48/2(9+3) is read to be Forty-Eight divided by two times the sum of nine and three

The way you all doing it is by adding that extra [] for no reason
48/[2(9+3)] is Forty-Eight divided by the product of two times the sum of nine and three

You dont group a number with an equation just because it touches the outside of the (). You at most, multiply.
 
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