-3v-21=6(v-)

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



-3v-21=6(v-)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

6(+v)

We multiply parentheses

6v

Back to the equation:

-(6v)



We add all the numbers together, and all the variables

-9v-21=0

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

-9v=21

v=21/-9

v=-2+1/3

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