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-(v+7)=-4v-13
We move all terms to the left:
-(v+7)-(-4v-13)=0
We get rid of parentheses
-v+4v-7+13=0
We add all the numbers together, and all the variables
3v+6=0
We move all terms containing v to the left, all other terms to the right
3v=-6
v=-6/3
v=-2
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