-99=9(x+7)

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Solution for -99=9(x+7) equation: 



-99=9(x+7)

We move all terms to the left:

-99-(9(x+7))=0



We calculate terms in parentheses: -(9(x+7)), so:

9(x+7)

We multiply parentheses

9x+63

Back to the equation:

-(9x+63)



We get rid of parentheses

-9x-63-99=0

We add all the numbers together, and all the variables

-9x-162=0

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

-9x=162

x=162/-9

x=-18

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