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7v+3(v-2)=4
We move all terms to the left:
7v+3(v-2)-(4)=0
We multiply parentheses
7v+3v-6-4=0
We add all the numbers together, and all the variables
10v-10=0
We move all terms containing v to the left, all other terms to the right
10v=10
v=10/10
v=1
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