-21=3(v+2)-6v

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Solution for -21=3(v+2)-6v equation: 



-21=3(v+2)-6v

We move all terms to the left:

-21-(3(v+2)-6v)=0



We calculate terms in parentheses: -(3(v+2)-6v), so:

3(v+2)-6v

We add all the numbers together, and all the variables

-6v+3(v+2)

We multiply parentheses

-6v+3v+6

We add all the numbers together, and all the variables

-3v+6

Back to the equation:

-(-3v+6)



We get rid of parentheses

3v-6-21=0

We add all the numbers together, and all the variables

3v-27=0

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

3v=27

v=27/3

v=9

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