21y+9y+15=3+2y

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Solution for 21y+9y+15=3+2y equation: 



21y+9y+15=3+2y

We move all terms to the left:

21y+9y+15-(3+2y)=0

We add all the numbers together, and all the variables

21y+9y-(2y+3)+15=0

We add all the numbers together, and all the variables

30y-(2y+3)+15=0

We get rid of parentheses

30y-2y-3+15=0

We add all the numbers together, and all the variables

28y+12=0

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

28y=-12

y=-12/28

y=-3/7

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