31=7+4v

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Solution for 31=7+4v equation: 



31=7+4v

We move all terms to the left:

31-(7+4v)=0

We add all the numbers together, and all the variables

-(4v+7)+31=0

We get rid of parentheses

-4v-7+31=0

We add all the numbers together, and all the variables

-4v+24=0

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

-4v=-24

v=-24/-4

v=+6

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