-5y-7=2y+21

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Solution for -5y-7=2y+21 equation: 



-5y-7=2y+21

We move all terms to the left:

-5y-7-(2y+21)=0

We get rid of parentheses

-5y-2y-21-7=0

We add all the numbers together, and all the variables

-7y-28=0

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

-7y=28

y=28/-7

y=-4

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