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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