-4v+31=3(7-3v)

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Solution for -4v+31=3(7-3v) equation: 



-4v+31=3(7-3v)

We move all terms to the left:

-4v+31-(3(7-3v))=0

We add all the numbers together, and all the variables

-4v-(3(-3v+7))+31=0



We calculate terms in parentheses: -(3(-3v+7)), so:

3(-3v+7)

We multiply parentheses

-9v+21

Back to the equation:

-(-9v+21)



We get rid of parentheses

-4v+9v-21+31=0

We add all the numbers together, and all the variables

5v+10=0

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

5v=-10

v=-10/5

v=-2

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