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-12=v/10-12
We move all terms to the left:
-12-(v/10-12)=0
We get rid of parentheses
-v/10+12-12=0
We multiply all the terms by the denominator
-v+12*10-12*10=0
We add all the numbers together, and all the variables
-v=0
v=0/-1
v=0
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