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-7=2+3v
We move all terms to the left:
-7-(2+3v)=0
We add all the numbers together, and all the variables
-(3v+2)-7=0
We get rid of parentheses
-3v-2-7=0
We add all the numbers together, and all the variables
-3v-9=0
We move all terms containing v to the left, all other terms to the right
-3v=9
v=9/-3
v=-3
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