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-9(v+3)=4v+12
We move all terms to the left:
-9(v+3)-(4v+12)=0
We multiply parentheses
-9v-(4v+12)-27=0
We get rid of parentheses
-9v-4v-12-27=0
We add all the numbers together, and all the variables
-13v-39=0
We move all terms containing v to the left, all other terms to the right
-13v=39
v=39/-13
v=-3
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