-63=-9y-8(y-7)

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Solution for -63=-9y-8(y-7) equation: 



-63=-9y-8(y-7)

We move all terms to the left:

-63-(-9y-8(y-7))=0



We calculate terms in parentheses: -(-9y-8(y-7)), so:

-9y-8(y-7)

We multiply parentheses

-9y-8y+56

We add all the numbers together, and all the variables

-17y+56

Back to the equation:

-(-17y+56)



We get rid of parentheses

17y-56-63=0

We add all the numbers together, and all the variables

17y-119=0

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

17y=119

y=119/17

y=7

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