-21=3(v+5)+3v

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Solution for -21=3(v+5)+3v equation: 



-21=3(v+5)+3v

We move all terms to the left:

-21-(3(v+5)+3v)=0



We calculate terms in parentheses: -(3(v+5)+3v), so:

3(v+5)+3v

We add all the numbers together, and all the variables

3v+3(v+5)

We multiply parentheses

3v+3v+15

We add all the numbers together, and all the variables

6v+15

Back to the equation:

-(6v+15)



We get rid of parentheses

-6v-15-21=0

We add all the numbers together, and all the variables

-6v-36=0

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

-6v=36

v=36/-6

v=-6

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