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8.6=-4.2+4v
We move all terms to the left:
8.6-(-4.2+4v)=0
We add all the numbers together, and all the variables
-(4v-4.2)+8.6=0
We get rid of parentheses
-4v+4.2+8.6=0
We add all the numbers together, and all the variables
-4v+12.8=0
We move all terms containing v to the left, all other terms to the right
-4v=-12.8
v=-12.8/-4
v=3+0.8/4
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