12y=15+9y

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Solution for 12y=15+9y equation: 



12y=15+9y

We move all terms to the left:

12y-(15+9y)=0

We add all the numbers together, and all the variables

12y-(9y+15)=0

We get rid of parentheses

12y-9y-15=0

We add all the numbers together, and all the variables

3y-15=0

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

3y=15

y=15/3

y=5

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