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-12=-1+v
We move all terms to the left:
-12-(-1+v)=0
We add all the numbers together, and all the variables
-(v-1)-12=0
We get rid of parentheses
-v+1-12=0
We add all the numbers together, and all the variables
-1v-11=0
We move all terms containing v to the left, all other terms to the right
-v=11
v=11/-1
v=-11
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