21=7/2v

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Solution for 21=7/2v equation: 



21=7/2v

We move all terms to the left:

21-(7/2v)=0



Domain of the equation: 2v)!=0

v!=0/1

v!=0

v∈R



We add all the numbers together, and all the variables

-(+7/2v)+21=0

We get rid of parentheses

-7/2v+21=0

We multiply all the terms by the denominator


21*2v-7=0

Wy multiply elements

42v-7=0

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

42v=7

v=7/42

v=1/6

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