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2.89=8.5b
We move all terms to the left:
2.89-(8.5b)=0
We add all the numbers together, and all the variables
-(+8.5b)+2.89=0
We get rid of parentheses
-8.5b+2.89=0
We move all terms containing b to the left, all other terms to the right
-8.5b=-2.89
b=-2.89/-8.5
b=1/2.9411764705882
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