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7v+7(v-6)=-84
We move all terms to the left:
7v+7(v-6)-(-84)=0
We add all the numbers together, and all the variables
7v+7(v-6)+84=0
We multiply parentheses
7v+7v-42+84=0
We add all the numbers together, and all the variables
14v+42=0
We move all terms containing v to the left, all other terms to the right
14v=-42
v=-42/14
v=-3
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