-9=2x-(-7)

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



-9=2x-(-7)

We move all terms to the left:

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



We calculate terms in parentheses: -(2x-(-7)), so:

2x-(-7)

We add all the numbers together, and all the variables

2x+7

Back to the equation:

-(2x+7)



We get rid of parentheses

-2x-7-9=0

We add all the numbers together, and all the variables

-2x-16=0

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

-2x=16

x=16/-2

x=-8

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