4y-3=-5y-21

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Solution for 4y-3=-5y-21 equation: 



4y-3=-5y-21

We move all terms to the left:

4y-3-(-5y-21)=0

We get rid of parentheses

4y+5y+21-3=0

We add all the numbers together, and all the variables

9y+18=0

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

9y=-18

y=-18/9

y=-2

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