-21=v/2

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Solution for -21=v/2 equation: 



-21=v/2

We move all terms to the left:

-21-(v/2)=0

We add all the numbers together, and all the variables

-(+v/2)-21=0

We get rid of parentheses

-v/2-21=0

We multiply all the terms by the denominator


-v-21*2=0

We add all the numbers together, and all the variables

-1v-42=0

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

-v=42

v=42/-1

v=-42

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