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-8v=-7v-8
We move all terms to the left:
-8v-(-7v-8)=0
We get rid of parentheses
-8v+7v+8=0
We add all the numbers together, and all the variables
-1v+8=0
We move all terms containing v to the left, all other terms to the right
-v=-8
v=-8/-1
v=+8
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