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5(2+7v)=220
We move all terms to the left:
5(2+7v)-(220)=0
We add all the numbers together, and all the variables
5(7v+2)-220=0
We multiply parentheses
35v+10-220=0
We add all the numbers together, and all the variables
35v-210=0
We move all terms containing v to the left, all other terms to the right
35v=210
v=210/35
v=6
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