6÷2(1+2) = ???

[McClendon 1st MRB]

  Kabasares 1st MRB said:

I'm sorry but, which is which? haha

hahaha that was my fault. i originally sent that post from my phone and didn't think it through fully. i was referring to the pictures of the calculators posted by Cantin. it doesn't matter whether or not a calculator is in radians or degrees or the third program (never used so its not important to me currently). since the original equation does not use any form of pi, then the modes do not matter. apparently everybody was taught a different rule of thumb in this (BEDMAS, PEMDAS, or any other method) but they all follow the same pattern.

[Lafy BAR]

  McClendon 1st MRB said:

hahaha that was my fault. i originally sent that post from my phone and didn't think it through fully. i was referring to the pictures of the calculators posted by Cantin. it doesn't matter whether or not a calculator is in radians or degrees or the third program (never used so its not important to me currently). since the original equation does not use any form of pi, then the modes do not matter. apparently everybody was taught a different rule of thumb in this (BEDMAS, PEMDAS, or any other method) but they all follow the same pattern.

That mode indicator is relating to complex numbers, not angles. Shouldn't have that effect though.

[Marsden 1st MRB]

6/2(1+2)=A

Remove the division from the operation.

so 6/2(1+2)=A

*6

2(1+2)=6A

2(3)=6A

6=6A

/6 /6

1=A.

Order of operations:

Please= Parenthasis

Excuse= Exponents

My= Multiplication (has presidence)

Dear= Division

Aunt=Adition (again has presidence)

Sally= Subtraction.

If you still doubt substitute 9 for A and watch it not work, ever.

Edit:

6/2(1+2)=A

6/2(3)=A

/3 /3

6/2=A/3

3=A/3

*3 *3

9=A

the only way it works for nine is if you breake the order of operations by balancing after you solve the parenthasis, which in and of itself unbalances the equation.

Edited March 14, 2012 by Marsden 1st MRB

[Peaker]

http://en.wikipedia.org/wiki/Order_of_operation

Sorry Marsden, but Multiplication and Division have the same precedence. In cases of conflicts, they are resolved left to right, as a source i've previously mentioned confirms. Same for addition and substraction.

Furthermore, parentheses are always resolved first, even before exponents.

In your example:

6/2(1+2)=A

6/2 * 3 =A

Now we go left to right as division and multiplication have the same priority.

6/2=3

3 * 3=A

9=A

EDIT: I suggest reading the Memnonics section in the wikipedia article.

Edited March 14, 2012 by Peaker 1st MRB

[Holland 1st MRB]

BEDMAS (Brackets, Exponents, Division, Multiplication, Addition, Subtraction) (part of Canadian pre-high school math curriculum) dictates that the answer would be 9.

Further more : http://www.wolframalpha.com/input/?i=6%C3%B72%281%2B2%29

Edited March 14, 2012 by Holland 1st MRB

[Cantin 1st MRB]

i think we can stop now

i think we can stop now

[Dawson 1st MRB]

If this doesn't end the thread here and now I don't know what will

[Cantin 1st MRB]

Hahahah

[Griswold]

Wtf to above and a wow at holland cause i already posted that link to wolfphram alpha on this exact topic

oh and fyi there might be some thousand island dressing in that sandwhich if you know what i mean XD.

OH GOD WHY

[Lafy BAR]

  Marsden 1st MRB said:

6/2(1+2)=A

Remove the division from the operation.

so 6/2(1+2)=A

*6

2(1+2)=6A

2(3)=6A

6=6A

/6 /6

1=A.

Order of operations:

Please= Parenthasis

Excuse= Exponents

My= Multiplication (has presidence)

Dear= Division

Aunt=Adition (again has presidence)

Sally= Subtraction.

If you still doubt substitute 9 for A and watch it not work, ever.

Edit:

6/2(1+2)=A

6/2(3)=A

/3 /3

6/2=A/3

3=A/3

*3 *3

9=A

the only way it works for nine is if you breake the order of operations by balancing after you solve the parenthasis, which in and of itself unbalances the equation.

Interestingly what you've written as breaking the order of operations is a correct solution, you haven't broken any rules. Your earlier multiplication by 6 is incredibly wrong. First of all, you're assuming that A/B*C means A/(B*C), which is the general mistake everyone is making. But that ignored, you are writing that A/B = C can be multiplied by A to produce B = AC.... if you multiply A/B=C by A you get A^2/B = AC. If you divide by A, you could get 1/B = C/A.... or 1/(2(1+2)) = A/6.... not sure why you would want to do that, but it would be valid... assuming the extra parentheses required to make your interpretation correct.

The bottom line is that A/B*C does NOT indicate

A

-----

B*C

It indicates

A

-- * C

B

[Frantz]

Im lost and saw a comic of two naked guys WTF IS GOING ON HERE!?!?!??!

Btw its 1 i did the math myself

[Lafy BAR]

  Frantz 1st MRB said:

Im lost and saw a comic of two naked guys WTF IS GOING ON HERE!?!?!??!

Btw its 1 i did the math myself

Not sure what the comic is about.... and you did the math wrong.

[Holland 1st MRB]

  Griswold 1st MRB said:

Wtf to above and a wow at holland cause i already posted that link to wolfphram alpha on this exact topic

oh and fyi there might be some thousand island dressing in that sandwhich if you know what i mean XD.

OH GOD WHY

Apologies, I did not read every post in the topic, and must have missed yours.

[Dawson 1st MRB]

[McKenzie 1st MRB]

I got 1, and its my power as an internet forum user to objectively ignore all other answers and reason!

But I am also really bad at math, so it could be 9.

[Dawson 1st MRB]