7v-31=-3(2-4v)

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Solution for 7v-31=-3(2-4v) equation: 



7v-31=-3(2-4v)

We move all terms to the left:

7v-31-(-3(2-4v))=0

We add all the numbers together, and all the variables

7v-(-3(-4v+2))-31=0



We calculate terms in parentheses: -(-3(-4v+2)), so:

-3(-4v+2)

We multiply parentheses

12v-6

Back to the equation:

-(12v-6)



We get rid of parentheses

7v-12v+6-31=0

We add all the numbers together, and all the variables

-5v-25=0

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

-5v=25

v=25/-5

v=-5

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