-9=-6y+3(y-7)

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Solution for -9=-6y+3(y-7) equation: 



-9=-6y+3(y-7)

We move all terms to the left:

-9-(-6y+3(y-7))=0



We calculate terms in parentheses: -(-6y+3(y-7)), so:

-6y+3(y-7)

We multiply parentheses

-6y+3y-21

We add all the numbers together, and all the variables

-3y-21

Back to the equation:

-(-3y-21)



We get rid of parentheses

3y+21-9=0

We add all the numbers together, and all the variables

3y+12=0

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

3y=-12

y=-12/3

y=-4

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