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

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



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

We move all terms to the left:

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



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

-3(v-7)

We multiply parentheses

-3v+21

Back to the equation:

-(-3v+21)



We get rid of parentheses

7v+3v-21+31=0

We add all the numbers together, and all the variables

10v+10=0

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

10v=-10

v=-10/10

v=-1

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