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23=2v+9
We move all terms to the left:
23-(2v+9)=0
We get rid of parentheses
-2v-9+23=0
We add all the numbers together, and all the variables
-2v+14=0
We move all terms containing v to the left, all other terms to the right
-2v=-14
v=-14/-2
v=+7
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