-91=-7(5-x)

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Solution for -91=-7(5-x) equation: 



-91=-7(5-x)

We move all terms to the left:

-91-(-7(5-x))=0

We add all the numbers together, and all the variables

-(-7(-1x+5))-91=0



We calculate terms in parentheses: -(-7(-1x+5)), so:

-7(-1x+5)

We multiply parentheses

7x-35

Back to the equation:

-(7x-35)



We get rid of parentheses

-7x+35-91=0

We add all the numbers together, and all the variables

-7x-56=0

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

-7x=56

x=56/-7

x=-8

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