-91=-7(y-86)

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Solution for -91=-7(y-86) equation: 



-91=-7(y-86)

We move all terms to the left:

-91-(-7(y-86))=0



We calculate terms in parentheses: -(-7(y-86)), so:

-7(y-86)

We multiply parentheses

-7y+602

Back to the equation:

-(-7y+602)



We get rid of parentheses

7y-602-91=0

We add all the numbers together, and all the variables

7y-693=0

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

7y=693

y=693/7

y=99

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