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-2b-21.4=16.3
We move all terms to the left:
-2b-21.4-(16.3)=0
We add all the numbers together, and all the variables
-2b-37.7=0
We move all terms containing b to the left, all other terms to the right
-2b=37.7
b=37.7/-2
b=-18+1/1.1764705882353
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