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-1.8b+3.2=3.92
We move all terms to the left:
-1.8b+3.2-(3.92)=0
We add all the numbers together, and all the variables
-1.8b-0.72=0
We move all terms containing b to the left, all other terms to the right
-1.8b=0.72
b=0.72/-1.8
b=-0.72/1.8
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