-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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