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b/20=2.8
We move all terms to the left:
b/20-(2.8)=0
We add all the numbers together, and all the variables
b/20-2.8=0
We multiply all the terms by the denominator
b-(2.8)*20=0
We add all the numbers together, and all the variables
b-56=0
We move all terms containing b to the left, all other terms to the right
b=56
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