-21=-3+v/3

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Solution for -21=-3+v/3 equation: 



-21=-3+v/3

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-v/3+3-21=0

We multiply all the terms by the denominator


-v+3*3-21*3=0

We add all the numbers together, and all the variables

-1v-54=0

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

-v=54

v=54/-1

v=-54

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