-7=7y+7(y-3)

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Solution for -7=7y+7(y-3) equation: 



-7=7y+7(y-3)

We move all terms to the left:

-7-(7y+7(y-3))=0



We calculate terms in parentheses: -(7y+7(y-3)), so:

7y+7(y-3)

We multiply parentheses

7y+7y-21

We add all the numbers together, and all the variables

14y-21

Back to the equation:

-(14y-21)



We get rid of parentheses

-14y+21-7=0

We add all the numbers together, and all the variables

-14y+14=0

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

-14y=-14

y=-14/-14

y=1

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