9-9y=-9(y-1)

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Solution for 9-9y=-9(y-1) equation: 



9-9y=-9(y-1)

We move all terms to the left:

9-9y-(-9(y-1))=0



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

-9(y-1)

We multiply parentheses

-9y+9

Back to the equation:

-(-9y+9)



We get rid of parentheses

-9y+9y-9+9=0

We add all the numbers together, and all the variables

=0

y=0/1

y=0

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