-21+3v=-(v+1)

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Solution for -21+3v=-(v+1) equation: 



-21+3v=-(v+1)

We move all terms to the left:

-21+3v-(-(v+1))=0



We calculate terms in parentheses: -(-(v+1)), so:

-(v+1)

We get rid of parentheses

-v-1

We add all the numbers together, and all the variables

-1v-1

Back to the equation:

-(-1v-1)



We get rid of parentheses

3v+1v+1-21=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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