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v+7=13-2v
We move all terms to the left:
v+7-(13-2v)=0
We add all the numbers together, and all the variables
v-(-2v+13)+7=0
We get rid of parentheses
v+2v-13+7=0
We add all the numbers together, and all the variables
3v-6=0
We move all terms containing v to the left, all other terms to the right
3v=6
v=6/3
v=2
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