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

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



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

We move all terms to the left:

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



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

-7v+3(v+7)

We multiply parentheses

-7v+3v+21

We add all the numbers together, and all the variables

-4v+21

Back to the equation:

-(-4v+21)



We get rid of parentheses

4v-21-7=0

We add all the numbers together, and all the variables

4v-28=0

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

4v=28

v=28/4

v=7

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