48÷2(9+3) = ? --> How smart are you?

[jwb]

Food for thought  

48 ÷ x(9 + 3) = 288
48 ÷ 9x + 3x = 288
48/12x = 288
4/x = 288
4 = 288x
4/288 = x
1/72 = x

NZ has spoken.

[spude]

put it in excel and guess what??? 288

[salakazam]

Food for thought  

48 ÷ x(9 + 3) = 288
48 ÷ 9x + 3x = 288
48/12x = 288
4/x = 288
4 = 288x
4/288 = x
1/72 = x

Indeed, answer is 2.
Economic colleges are getting us guys who think is 288... I can figure why we are in a global systemic crisis...

[FREAKgeek]

The 12 must then be multiplied by the 2 BEFORE the division takes place to remove the parentheses.

No, it's after. You even said it yourself in your previous post. Multiplication and division have the same precedence, and they
associate left to right. What the parentheses do is force addition first, that is all.


288, bitches.

[dr.chimps]

No, it's after. You even said it yourself in your previous post. Multiplication and division have the same precedence, and they
associate left to right. What the parentheses do is force addition first, that is all.

Yup. Bodmas. Isn't this grade two stuff!? Even I know this, and I'm a science moron.

-->Brackets, ordinals, mult/div, add/sub.

[Tito24]

[sync pulse]

48÷2(9+3) = ?
48÷(9*2)+(2*3) = ?
48÷(18+6) = ?
48÷24 = ?
2=?

[nzmusclemonster]

No, it's after. You even said it yourself in your previous post. Multiplication and division have the same precedence, and they
associate left to right. What the parentheses do is force addition first, that is all.


288, bitches.

multiplication by juxtaposition - multiplying by just putting things next to each other, rather than using the "×" sign indicates that the juxtaposed values must be multiplied together before processing other operations.

This is basic math theory.

How would you feel about this equation.....

a ÷ bc

[FREAKgeek]

48÷2(9+3) = ?
48÷(9*2)+(2*3) = ?
48÷(18+6) = ?
48÷24 = ?
2=?

you solved 48÷(2(9+3))

[Tito24]

[el numero uno]

From Microsoft Excel  :

[el numero uno]

and now

[Tito24]

i thought bodybuilders werent smart but now i see i was wrong!

[el numero uno]

See? It's different...

[sync pulse]

Where is Tom Lehrer when you need him?

[FREAKgeek]

multiplication by juxtaposition - multiplying by just putting things next to each other, rather than using the "×" sign indicates that the juxtaposed values must be multiplied together before processing other operations.

This is basic math theory.

How would you feel about this equation.....

a ÷ bc

It's still understood as (a ÷ b) * c.

Most math texts wouldn't write it your way. That is why you see no ÷ symbol in polynomials. They would use a/bc, bc then being written as the denominator, and eliminate the use of ÷ altogether.

[nzmusclemonster]

It's still understood as (a ÷ b) * c.

Most math texts wouldn't write it your way. That is why you see no ÷ symbol in polynomials. They would use a/bc, bc then being written as the denominator, and eliminate the use of ÷ altogether.

This is correct..... But in this instance it is written that way. What does it say at the top of every exam? READ THE QUESTIONS CAREFULLY. You are reading the question and creating an entirely new question.

Take it for face value. You don't need to change anything round. It is a poor question, but any mathematician worth their salt can see it is 2 in a about 2 seconds.

[jwb]

Excel users.

Type it into this calculator exactly as written in the question don't use the / symbol from your keyboard only use the divide symbol in the menu which matches the question. ie. ÷

http://www.mathway.com/problem.aspx?p=basicmath

Then type it in the way you have been into excel. ie. using the / symbol.

You have been changing the question before you ask for an answer.

[disco_stu]

That is the thing.

Adding the 9 and 3 doesn't automatically get rid of the parentheses because there is a 2 waiting to multiply their sum.

You have to do that multiplication before proceeding.

Also, when do you see things in parentheses on the same line as the number they are going to eventually be divided into?

It would be written         48        in most exams.
                                 2(9+3)
     

                       
                               

just to help everyone out so this stupid argument ends...JWB is CORRECT..in everything he's said.

so stop arguing. you cant win an argument against FACT.

unless of course, you are an idiot...hence this long debate.

[jwb]

just to help everyone out so this stupid argument ends...JWB is CORRECT..in everything he's said.

so stop arguing. you cant win an argument against FACT.

unless of course, you are an idiot...hence this long debate.

NZ is the brain Trust me.

[dr.chimps]

just to help everyone out so this stupid argument ends...JWB is CORRECT..in everything he's said.

so stop arguing. you cant win an argument against FACT.

unless of course, you are an idiot...hence this long debate.

Disco Stu angry!?   What a surprise.

[nzmusclemonster]

NZ is the brain Trust me.

Antipodeans for the win 

[jwb]

Antipodeans for the win 

Now if we could just get Americans to spell correctly.... or use the metric system.... or get rid of pennies!

[no one]

2

dummies.

[jwb]

One more comment from the youtube comments on this equation.

Implicit multiplication has a higher priority than explicit multiplication (or division). Some calculators, either handheld or web-based, follow this rule and others don't.

45÷2x is not evaluated as 45÷2*x just the same as 45÷2(9+3) is not the same as 45÷2*(9+3)