-1=-7v+3(v-7)

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Solution for -1=-7v+3(v-7) equation: 



-1=-7v+3(v-7)

We move all terms to the left:

-1-(-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+21-1=0

We add all the numbers together, and all the variables

4v+20=0

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

4v=-20

v=-20/4

v=-5

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