15=-8(y-1)+9

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Solution for 15=-8(y-1)+9 equation: 



15=-8(y-1)+9

We move all terms to the left:

15-(-8(y-1)+9)=0



We calculate terms in parentheses: -(-8(y-1)+9), so:

-8(y-1)+9

We multiply parentheses

-8y+8+9

We add all the numbers together, and all the variables

-8y+17

Back to the equation:

-(-8y+17)



We get rid of parentheses

8y-17+15=0

We add all the numbers together, and all the variables

8y-2=0

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

8y=2

y=2/8

y=1/4

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