-21=-3/8v

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Solution for -21=-3/8v equation: 



-21=-3/8v

We move all terms to the left:

-21-(-3/8v)=0



Domain of the equation: 8v)!=0

v!=0/1

v!=0

v∈R



We get rid of parentheses

3/8v-21=0

We multiply all the terms by the denominator


-21*8v+3=0

Wy multiply elements

-168v+3=0

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

-168v=-3

v=-3/-168

v=1/56

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