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-28=-8+4v
We move all terms to the left:
-28-(-8+4v)=0
We add all the numbers together, and all the variables
-(4v-8)-28=0
We get rid of parentheses
-4v+8-28=0
We add all the numbers together, and all the variables
-4v-20=0
We move all terms containing v to the left, all other terms to the right
-4v=20
v=20/-4
v=-5
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