12y+15=-3y-30

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Solution for 12y+15=-3y-30 equation: 



12y+15=-3y-30

We move all terms to the left:

12y+15-(-3y-30)=0

We get rid of parentheses

12y+3y+30+15=0

We add all the numbers together, and all the variables

15y+45=0

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

15y=-45

y=-45/15

y=-3

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