5(y+3)=9y-21

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Solution for 5(y+3)=9y-21 equation: 



5(y+3)=9y-21

We move all terms to the left:

5(y+3)-(9y-21)=0

We multiply parentheses

5y-(9y-21)+15=0

We get rid of parentheses

5y-9y+21+15=0

We add all the numbers together, and all the variables

-4y+36=0

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

-4y=-36

y=-36/-4

y=+9

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