7Y-7=-7(y-9)

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



7-7=-7(Y-9)

We move all terms to the left:

7-7-(-7(Y-9))=0

We add all the numbers together, and all the variables

-(-7(Y-9))=0



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

-7(Y-9)

We multiply parentheses

-7Y+63

Back to the equation:

-(-7Y+63)



We get rid of parentheses

7Y-63=0

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

7Y=63

Y=63/7

Y=9

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