Math: 6÷2(1+2) = ?

___6(1+2)____=9

2


_____x(1+2)______=9
2


_____3x______=9
2

x=2/3(9)

x=6

Already did that.

_______6(1+2)_______=
2


_______6(3)_______=
2

_______18_______=
2

=9

___6(1+2)____=9

2


___6(1+2)____=9

x


6(1+2)=9x

18=9x

18/9=x


2=x

___6(1+2)____=9

2


___6(x+2)____=9

2

x+2=(2/6)9

x+2=18/6

x+2=3

x=3-2

x=1

___6(1+2)____=9

2

___6(1+x)____=9

2


1+x= (2/6)9

1+x= 18/6

1+x=3

x=3-1

x=2

There. Sorry I didn't pick up on your mistakes sooner.

And the only way to removing parentheses (on green block), is to resolve the whole block first itself:


6/2(1+2) = x



you can't remove it just after resolving the inside stuff only. That's the bottom line of all.

Or are you thinking parentheses are there just for stupid design purpose thing or something?


.

Last Edited by IWASTHERE on 01/17/2013 07:12 PM

Ducm, please stop. The answer is 9. Will always be 9. I can show you about 5 different ways to check the answer is 9.


Edit: For the sake of eduction, The parenthesis are there for one reason, to tell you to do the 2+1 first. Nothing more, nothing less. From there you work the problem as normal.

Basically the problem really comes down to....

6 ÷ 2 x 3= ?

Work left to right from there. Pretty simple from here.


The confusion comes in when people try to write a word problem. They are telling you to add/complete 2(2+1) FIRST "AKA [2(2+1)]". Every word problem in this thread has said the same thing. Which does not match the equation.

Last Edited by Revguard on 01/17/2013 07:25 PM

6 / 2(1+2) = x
clear parentheses by distributive property :
6 / (2 * 1) + (2 * 2) = x
and clear parentheses by multiplication :
6 / 2 + 4 = x
then order of operations : division first, then addition :
3 + 4 = x

7 = x

You're welcome.

This is wrong on many levels. Try to plug 7 into the original equation where X is. Check your work.

Bingo, so why not just reporting this if your claim is so obvious:

6/2*3 = x



-

Because the original poster was making a point about our education system. And the plethora of people on here who say their IQ is 140.

9

Yep, we have come to that. Now just trying to explain it to people who are not as skilled with math.

Then solve this:

6/2(1x+2)=x



x=?

.

Last Edited by IWASTHERE on 01/17/2013 07:51 PM

OK.

6 / 2(1+2) = 7
6 / (2 * 1) + (2 * 2) = 7
6 / 2 + 4 = 7
3 + 4 = 7
7 = 7

I was right.

that is the stupidest thing I have ever seen...

Correct, so what is 6/2a ?

Yup, same thing, and it equals 9.

That is not how you check a problem.

Are you people serious?

Edit: No, I am not hand writing another check either.

Last Edited by Revguard on 01/17/2013 07:51 PM

Wrong! OMFG. a/1a would allow a to be any number!

4/1 x 4 = 16

2/1 x 2 = 4

a/1a is not a math equation. There is no equal symbol.

WTF are people really this stupid?

Same thing for 6/2a. A could be anything.

6/2 x 4 = 12

6/2 X 1 = 3

6/2 x 10 = 30

exactly...

now I know why you live in Australia dumbass

4

I asked a question:

what is
a / 1a = ??

Then, what is
6 / 2a = ??

6 ÷ 2(2+1)= 9

x as been substituted for every integer for both the original equation and in fraction form and correctly solved for. The answer is 9.

Plug it into any good scientific or engineering calculator and it will show you the answer has always been, and always will be 9.