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18.9-7v=1.4
We move all terms to the left:
18.9-7v-(1.4)=0
We add all the numbers together, and all the variables
-7v+17.5=0
We move all terms containing v to the left, all other terms to the right
-7v=-17.5
v=-17.5/-7
v=2+2.3333333333333/4.6666666666667
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