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-13.9+b/12.8=13.309
We move all terms to the left:
-13.9+b/12.8-(13.309)=0
We add all the numbers together, and all the variables
b/12.8-27.209=0
We multiply all the terms by the denominator
b-(27.209)*12.8=0
We add all the numbers together, and all the variables
b-348.2752=0
We move all terms containing b to the left, all other terms to the right
b=348.2752
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