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6.17+8b=53.21
We move all terms to the left:
6.17+8b-(53.21)=0
We add all the numbers together, and all the variables
8b-47.04=0
We move all terms containing b to the left, all other terms to the right
8b=47.04
b=47.04/8
b=5+6.7692307692308/7.6923076923077
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