9=-(x-7)

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



9=-(x-7)

We move all terms to the left:

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



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

-(x-7)

We get rid of parentheses

-x+7

We add all the numbers together, and all the variables

-1x+7

Back to the equation:

-(-1x+7)



We get rid of parentheses

1x-7+9=0

We add all the numbers together, and all the variables

x+2=0

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

x=-2

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