7=-7(-9x+-10)

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Solution for 7=-7(-9x+-10) equation: 



7=-7(-9x+-10)

We move all terms to the left:

7-(-7(-9x+-10))=0

We add all the numbers together, and all the variables

-(-7(-9x-10))+7=0



We calculate terms in parentheses: -(-7(-9x-10)), so:

-7(-9x-10)

We multiply parentheses

63x+70

Back to the equation:

-(63x+70)



We get rid of parentheses

-63x-70+7=0

We add all the numbers together, and all the variables

-63x-63=0

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

-63x=63

x=63/-63

x=-1

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