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-12.2=1.3+b/0.2
We move all terms to the left:
-12.2-(1.3+b/0.2)=0
We add all the numbers together, and all the variables
-(b/0.2+1.3)-12.2=0
We get rid of parentheses
-b/0.2-1.3-12.2=0
We multiply all the terms by the denominator
-b-(1.3)*0.2-(12.2)*0.2=0
We add all the numbers together, and all the variables
-1b-2.7=0
We move all terms containing b to the left, all other terms to the right
-b=2.7
b=2.7/-1
b=-2+0.7/1
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