48÷2(9+3) = ???

[Piscine]

this^

its 2



you must do inside the () first then get rid of them. thus 2

The only way to get 2 and be even remotely correct is to interpret the / symbol (which wasn't part of the original problem) as the vinculum in a fraction and do the bottom before the top.

Maybe I'm just an old swamp dog from Louiiiiiisiana that doesn't remember math class correctly, but that's how I was taught to do it.

 

[pimpercrombie]

the answer is 288, because it is 2x12 not 2 attached to parenthesis. parethesis no longer exsist. 48/2(9+3)
becomes 48/2*12
then left to right
48/2=24*12=288
but just to be sure i will check with my gf the math teacher who drills pemdas into my head everytime i ask for help with an equation relating to aquautic systems engineering

 

[TheRealAndyCook]

a problem like this needs to be put back into context to figure out which answer is correct.

Its more of an academic problem, then a math one.

To my understanding, even tho i was taugh BEDMAS, the correct way is LEFT-TO-RIGHT

BE (D or M, L2R) (A or S, L2R)

 

[Thalan]

The first step in the order of operation includes only inside the parenthesis, and not the numbers attached to it. After the part of the equation inside the parenthesis is done, you resume the order of operations using the parenthesis as a basis for multiplication. This is how I was taught, and what I believe to be correct. Problems like this occur daily if you are making excel spreadsheets (even though excel is retarded) & dealing with money and statistics.

No the first step is to remove the parentheses from the equation. Thus 9+3*2 before you involve the 48 at all

 

[TheRealAndyCook]

if we knew the question was like this.

everyone group needs 9 sheets of paper, plus 3 pens, how many items would you need if there was 48 students.

48÷2(9+3)


we know that way we could times 48÷2 by 12 with out an issue




-------------------------------

if the problem was the school is given an unknown amount of packages per student, each package including two sets of nine sheets of paper and two sets of 3 pens. How many items are there per student

We would need to times the 2 by 12 before we could do the final division

 

[pimpercrombie]

After checking with the gf the answer is 288. i am incorrect about parenthesis though they do still exsist they just mean multiplication is the operation

 

[Lepisosteus platyrhincus]

No the first step is to remove the parentheses from the equation. Thus 9+3*2 before you involve the 48 at all

this is the way i remember

 

[TheRealAndyCook]

These mnemonics may be misleading, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction

http://en.wikipedia.org/wiki/Order_of_operations#Mnemonics


Like i said, you need to know the context of the problem to solve it properly.

 

[Piscine]

These mnemonics may be misleading, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction

http://en.wikipedia.org/wiki/Order_of_operations#Mnemonics


Like i said, you need to know the context of the problem to solve it properly.

No, you really don't... That's what the parenthesis and the order of operations are for... it tells you in that link you posted how to do the problem.

 

[EntoCraig]

These mnemonics may be misleading, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction

http://en.wikipedia.org/wiki/Order_of_operations#Mnemonics


Like i said, you need to know the context of the problem to solve it properly.

Exactly, both answers are correct until the equation is better specified. Its current form leads to different answers when using any excepted form of mathematical problem solving.

The entire purpose of this equation is to create controversy when in fact, the original equation itself is incorrectly presented.

No, you really don't... That's what the parenthesis and the order of operations are for... it tells you in that link you posted how to do the problem.

Which Order of Operations are you reffering to? there are 3 accepted forms which provide different answers. Read my above post. We are all being dooped by an incorrect equation.