31=8q-9

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Solution for 31=8q-9 equation: 



31=8q-9

We move all terms to the left:

31-(8q-9)=0

We get rid of parentheses

-8q+9+31=0

We add all the numbers together, and all the variables

-8q+40=0

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

-8q=-40

q=-40/-8

q=+5

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