-315=-7(9-9x)

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Solution for -315=-7(9-9x) equation: 



-315=-7(9-9x)

We move all terms to the left:

-315-(-7(9-9x))=0

We add all the numbers together, and all the variables

-(-7(-9x+9))-315=0



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

-7(-9x+9)

We multiply parentheses

63x-63

Back to the equation:

-(63x-63)



We get rid of parentheses

-63x+63-315=0

We add all the numbers together, and all the variables

-63x-252=0

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

-63x=252

x=252/-63

x=-4

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