3y+9-2y=-12-5y

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Solution for 3y+9-2y=-12-5y equation: 



3y+9-2y=-12-5y

We move all terms to the left:

3y+9-2y-(-12-5y)=0

We add all the numbers together, and all the variables

3y-2y-(-5y-12)+9=0

We add all the numbers together, and all the variables

y-(-5y-12)+9=0

We get rid of parentheses

y+5y+12+9=0

We add all the numbers together, and all the variables

6y+21=0

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

6y=-21

y=-21/6

y=-3+1/2

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