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-54-2v=-v=21
We move all terms to the left:
-54-2v-(-v)=0
We add all the numbers together, and all the variables
-2v-(-1v)-54=0
We get rid of parentheses
-2v+1v-54=0
We add all the numbers together, and all the variables
-1v-54=0
We move all terms containing v to the left, all other terms to the right
-v=54
v=54/-1
v=-54
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