3(-2y+3)=21

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Solution for 3(-2y+3)=21 equation: 



3(-2y+3)=21

We move all terms to the left:

3(-2y+3)-(21)=0

We multiply parentheses

-6y+9-21=0

We add all the numbers together, and all the variables

-6y-12=0

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

-6y=12

y=12/-6

y=-2

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