2y-3+y=21

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



2y-3+y=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

3y-24=0

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

3y=24

y=24/3

y=8

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