3y-21=2y+4

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Solution for 3y-21=2y+4 equation: 



3y-21=2y+4

We move all terms to the left:

3y-21-(2y+4)=0

We get rid of parentheses

3y-2y-4-21=0

We add all the numbers together, and all the variables

y-25=0

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

y=25

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