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

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



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

We move all terms to the left:

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



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

-7y+3(y+3)

We multiply parentheses

-7y+3y+9

We add all the numbers together, and all the variables

-4y+9

Back to the equation:

-(-4y+9)



We get rid of parentheses

4y-9-7=0

We add all the numbers together, and all the variables

4y-16=0

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

4y=16

y=16/4

y=4

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