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-19.8b+19.1=-9b-19.54-15b
We move all terms to the left:
-19.8b+19.1-(-9b-19.54-15b)=0
We add all the numbers together, and all the variables
-19.8b-(-24b-19.54)+19.1=0
We get rid of parentheses
-19.8b+24b+19.54+19.1=0
We add all the numbers together, and all the variables
4.2b+38.64=0
We move all terms containing b to the left, all other terms to the right
4.2b=-38.64
b=-38.64/4.2
b=-9+0.84/4.2
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