-81=-7(v+7)+3v

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Solution for -81=-7(v+7)+3v equation: 



-81=-7(v+7)+3v

We move all terms to the left:

-81-(-7(v+7)+3v)=0



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

-7(v+7)+3v

We add all the numbers together, and all the variables

3v-7(v+7)

We multiply parentheses

3v-7v-49

We add all the numbers together, and all the variables

-4v-49

Back to the equation:

-(-4v-49)



We get rid of parentheses

4v+49-81=0

We add all the numbers together, and all the variables

4v-32=0

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

4v=32

v=32/4

v=8

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