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0.2b+(-0.75)=0.5
We move all terms to the left:
0.2b+(-0.75)-(0.5)=0
We add all the numbers together, and all the variables
0.2b-1.25=0
We move all terms containing b to the left, all other terms to the right
0.2b=1.25
b=1.25/0.2
b=6+0.05/0.2
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