-31=3+9-8y

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Solution for -31=3+9-8y equation: 



-31=3+9-8y

We move all terms to the left:

-31-(3+9-8y)=0

We add all the numbers together, and all the variables

-(-8y+12)-31=0

We get rid of parentheses

8y-12-31=0

We add all the numbers together, and all the variables

8y-43=0

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

8y=43

y=43/8

y=5+3/8

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