-3=-3(y-7)

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



-3=-3(y-7)

We move all terms to the left:

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



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

-3(y-7)

We multiply parentheses

-3y+21

Back to the equation:

-(-3y+21)



We get rid of parentheses

3y-21-3=0

We add all the numbers together, and all the variables

3y-24=0

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

3y=24

y=24/3

y=8

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