8y+31=15y-18

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Solution for 8y+31=15y-18 equation: 



8y+31=15y-18

We move all terms to the left:

8y+31-(15y-18)=0

We get rid of parentheses

8y-15y+18+31=0

We add all the numbers together, and all the variables

-7y+49=0

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

-7y=-49

y=-49/-7

y=+7

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