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-0.25=0.2b
We move all terms to the left:
-0.25-(0.2b)=0
We add all the numbers together, and all the variables
-(+0.2b)-0.25=0
We get rid of parentheses
-0.2b-0.25=0
We move all terms containing b to the left, all other terms to the right
-0.2b=0.25
b=0.25/-0.2
b=-1+0.05/0.2
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