-1287=-13(-7x+8)

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Solution for -1287=-13(-7x+8) equation: 



-1287=-13(-7x+8)

We move all terms to the left:

-1287-(-13(-7x+8))=0



We calculate terms in parentheses: -(-13(-7x+8)), so:

-13(-7x+8)

We multiply parentheses

91x-104

Back to the equation:

-(91x-104)



We get rid of parentheses

-91x+104-1287=0

We add all the numbers together, and all the variables

-91x-1183=0

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

-91x=1183

x=1183/-91

x=-13

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