3y-8=21y+28

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Solution for 3y-8=21y+28 equation: 



3y-8=21y+28

We move all terms to the left:

3y-8-(21y+28)=0

We get rid of parentheses

3y-21y-28-8=0

We add all the numbers together, and all the variables

-18y-36=0

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

-18y=36

y=36/-18

y=-2

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