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-20=4+4v
We move all terms to the left:
-20-(4+4v)=0
We add all the numbers together, and all the variables
-(4v+4)-20=0
We get rid of parentheses
-4v-4-20=0
We add all the numbers together, and all the variables
-4v-24=0
We move all terms containing v to the left, all other terms to the right
-4v=24
v=24/-4
v=-6
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