6v-21=-3(v+4)

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Solution for 6v-21=-3(v+4) equation: 



6v-21=-3(v+4)

We move all terms to the left:

6v-21-(-3(v+4))=0



We calculate terms in parentheses: -(-3(v+4)), so:

-3(v+4)

We multiply parentheses

-3v-12

Back to the equation:

-(-3v-12)



We get rid of parentheses

6v+3v+12-21=0

We add all the numbers together, and all the variables

9v-9=0

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

9v=9

v=9/9

v=1

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