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3v+42.8=5.4
We move all terms to the left:
3v+42.8-(5.4)=0
We add all the numbers together, and all the variables
3v+37.4=0
We move all terms containing v to the left, all other terms to the right
3v=-37.4
v=-37.4/3
v=-12+1/2.1428571428571
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