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0.375b+18=-2.25
We move all terms to the left:
0.375b+18-(-2.25)=0
We add all the numbers together, and all the variables
0.375b+20.25=0
We move all terms containing b to the left, all other terms to the right
0.375b=-20.25
b=-20.25/0.375
b=-54
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