3(-3y+4)=21

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Solution for 3(-3y+4)=21 equation: 



3(-3y+4)=21

We move all terms to the left:

3(-3y+4)-(21)=0

We multiply parentheses

-9y+12-21=0

We add all the numbers together, and all the variables

-9y-9=0

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

-9y=9

y=9/-9

y=-1

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