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2v-v=12+3v
We move all terms to the left:
2v-v-(12+3v)=0
We add all the numbers together, and all the variables
2v-v-(3v+12)=0
We add all the numbers together, and all the variables
v-(3v+12)=0
We get rid of parentheses
v-3v-12=0
We add all the numbers together, and all the variables
-2v-12=0
We move all terms containing v to the left, all other terms to the right
-2v=12
v=12/-2
v=-6
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