21=v/2+9

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Solution for 21=v/2+9 equation: 



21=v/2+9

We move all terms to the left:

21-(v/2+9)=0

We get rid of parentheses

-v/2-9+21=0

We multiply all the terms by the denominator


-v-9*2+21*2=0

We add all the numbers together, and all the variables

-1v+24=0

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

-v=-24

v=-24/-1

v=+24

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