-9y+21=8(y-8)

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Solution for -9y+21=8(y-8) equation: 



-9y+21=8(y-8)

We move all terms to the left:

-9y+21-(8(y-8))=0



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

8(y-8)

We multiply parentheses

8y-64

Back to the equation:

-(8y-64)



We get rid of parentheses

-9y-8y+64+21=0

We add all the numbers together, and all the variables

-17y+85=0

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

-17y=-85

y=-85/-17

y=+5

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