-y+3=-18

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Solution for -y+3=-18 equation: 



-y+3=-18

We move all terms to the left:

-y+3-(-18)=0

We add all the numbers together, and all the variables

-1y+21=0

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

-y=-21

y=-21/-1

y=+21

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