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1.5b+3=8.1b+8
We move all terms to the left:
1.5b+3-(8.1b+8)=0
We get rid of parentheses
1.5b-8.1b-8+3=0
We add all the numbers together, and all the variables
-6.6b-5=0
We move all terms containing b to the left, all other terms to the right
-6.6b=5
b=5/-6.6
b=-5/6.6
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