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8v-42=6v-18
We move all terms to the left:
8v-42-(6v-18)=0
We get rid of parentheses
8v-6v+18-42=0
We add all the numbers together, and all the variables
2v-24=0
We move all terms containing v to the left, all other terms to the right
2v=24
v=24/2
v=12
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