4v=12+9

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Solution for 4v=12+9 equation: 



4v=12+9

We move all terms to the left:

4v-(12+9)=0

We add all the numbers together, and all the variables

4v-21=0

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

4v=21

v=21/4

v=5+1/4

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