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61.2=5.1b
We move all terms to the left:
61.2-(5.1b)=0
We add all the numbers together, and all the variables
-(+5.1b)+61.2=0
We get rid of parentheses
-5.1b+61.2=0
We move all terms containing b to the left, all other terms to the right
-5.1b=-61.2
b=-61.2/-5.1
b=12+7.105427357601E-15/5.1
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