9y-1=7(y-1)

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Solution for 9y-1=7(y-1) equation: 



9y-1=7(y-1)

We move all terms to the left:

9y-1-(7(y-1))=0



We calculate terms in parentheses: -(7(y-1)), so:

7(y-1)

We multiply parentheses

7y-7

Back to the equation:

-(7y-7)



We get rid of parentheses

9y-7y+7-1=0

We add all the numbers together, and all the variables

2y+6=0

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

2y=-6

y=-6/2

y=-3

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