31=4v+9

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Solution for 31=4v+9 equation: 



31=4v+9

We move all terms to the left:

31-(4v+9)=0

We get rid of parentheses

-4v-9+31=0

We add all the numbers together, and all the variables

-4v+22=0

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

-4v=-22

v=-22/-4

v=5+1/2

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