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13v-9=7+2v-v
We move all terms to the left:
13v-9-(7+2v-v)=0
We add all the numbers together, and all the variables
13v-(v+7)-9=0
We get rid of parentheses
13v-v-7-9=0
We add all the numbers together, and all the variables
12v-16=0
We move all terms containing v to the left, all other terms to the right
12v=16
v=16/12
v=1+1/3
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