6y+42=-3y+15

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Solution for 6y+42=-3y+15 equation: 



6y+42=-3y+15

We move all terms to the left:

6y+42-(-3y+15)=0

We get rid of parentheses

6y+3y-15+42=0

We add all the numbers together, and all the variables

9y+27=0

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

9y=-27

y=-27/9

y=-3

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