-y+15=-4y-12

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Solution for -y+15=-4y-12 equation: 



-y+15=-4y-12

We move all terms to the left:

-y+15-(-4y-12)=0

We add all the numbers together, and all the variables

-1y-(-4y-12)+15=0

We get rid of parentheses

-1y+4y+12+15=0

We add all the numbers together, and all the variables

3y+27=0

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

3y=-27

y=-27/3

y=-9

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