12y-3=9y-15

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Solution for 12y-3=9y-15 equation: 



12y-3=9y-15

We move all terms to the left:

12y-3-(9y-15)=0

We get rid of parentheses

12y-9y+15-3=0

We add all the numbers together, and all the variables

3y+12=0

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

3y=-12

y=-12/3

y=-4

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