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34=42-2v
We move all terms to the left:
34-(42-2v)=0
We add all the numbers together, and all the variables
-(-2v+42)+34=0
We get rid of parentheses
2v-42+34=0
We add all the numbers together, and all the variables
2v-8=0
We move all terms containing v to the left, all other terms to the right
2v=8
v=8/2
v=4
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