21=3(v+5)

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



21=3(v+5)

We move all terms to the left:

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



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

3(v+5)

We multiply parentheses

3v+15

Back to the equation:

-(3v+15)



We get rid of parentheses

-3v-15+21=0

We add all the numbers together, and all the variables

-3v+6=0

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

-3v=-6

v=-6/-3

v=+2

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