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-2.1=v/7+20.3
We move all terms to the left:
-2.1-(v/7+20.3)=0
We get rid of parentheses
-v/7-20.3-2.1=0
We multiply all the terms by the denominator
-v-(20.3)*7-(2.1)*7=0
We add all the numbers together, and all the variables
-1v-156.8=0
We move all terms containing v to the left, all other terms to the right
-v=156.8
v=156.8/-1
v=-156+0.80000000000001/1
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