21=-7+2(v-2)

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Solution for 21=-7+2(v-2) equation: 



21=-7+2(v-2)

We move all terms to the left:

21-(-7+2(v-2))=0



We calculate terms in parentheses: -(-7+2(v-2)), so:

-7+2(v-2)

determiningTheFunctionDomain
2(v-2)-7

We multiply parentheses

2v-4-7

We add all the numbers together, and all the variables

2v-11

Back to the equation:

-(2v-11)



We get rid of parentheses

-2v+11+21=0

We add all the numbers together, and all the variables

-2v+32=0

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

-2v=-32

v=-32/-2

v=+16

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