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-13=v-7+5v
We move all terms to the left:
-13-(v-7+5v)=0
We add all the numbers together, and all the variables
-(6v-7)-13=0
We get rid of parentheses
-6v+7-13=0
We add all the numbers together, and all the variables
-6v-6=0
We move all terms containing v to the left, all other terms to the right
-6v=6
v=6/-6
v=-1
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