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7860+4.25b=12b
We move all terms to the left:
7860+4.25b-(12b)=0
We add all the numbers together, and all the variables
-7.75b+7860=0
We move all terms containing b to the left, all other terms to the right
-7.75b=-7860
b=-7860/-7.75
b=1014+1/5.16666666667
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