9x-12-2x=8x-(7-x)

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Solution for 9x-12-2x=8x-(7-x) equation: 



9x-12-2x=8x-(7-x)

We move all terms to the left:

9x-12-2x-(8x-(7-x))=0

We add all the numbers together, and all the variables

9x-2x-(8x-(-1x+7))-12=0

We add all the numbers together, and all the variables

7x-(8x-(-1x+7))-12=0



We calculate terms in parentheses: -(8x-(-1x+7)), so:

8x-(-1x+7)

We get rid of parentheses

8x+1x-7

We add all the numbers together, and all the variables

9x-7

Back to the equation:

-(9x-7)



We get rid of parentheses

7x-9x+7-12=0

We add all the numbers together, and all the variables

-2x-5=0

We move all terms containing x to the left, all other terms to the right

-2x=5

x=5/-2

x=-2+1/2

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