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-4-3v=7v+71
We move all terms to the left:
-4-3v-(7v+71)=0
We get rid of parentheses
-3v-7v-71-4=0
We add all the numbers together, and all the variables
-10v-75=0
We move all terms containing v to the left, all other terms to the right
-10v=75
v=75/-10
v=-7+1/2
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