-91=7(-x-7)

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Solution for -91=7(-x-7) equation: 



-91=7(-x-7)

We move all terms to the left:

-91-(7(-x-7))=0

We add all the numbers together, and all the variables

-(7(-1x-7))-91=0



We calculate terms in parentheses: -(7(-1x-7)), so:

7(-1x-7)

We multiply parentheses

-7x-49

Back to the equation:

-(-7x-49)



We get rid of parentheses

7x+49-91=0

We add all the numbers together, and all the variables

7x-42=0

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

7x=42

x=42/7

x=6

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