3(y+5)=-3y-21

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Solution for 3(y+5)=-3y-21 equation: 



3(y+5)=-3y-21

We move all terms to the left:

3(y+5)-(-3y-21)=0

We multiply parentheses

3y-(-3y-21)+15=0

We get rid of parentheses

3y+3y+21+15=0

We add all the numbers together, and all the variables

6y+36=0

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

6y=-36

y=-36/6

y=-6

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