3.9+8.5b=47.65

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Solution for 3.9+8.5b=47.65 equation: 



3.9+8.5b=47.65

We move all terms to the left:

3.9+8.5b-(47.65)=0

We add all the numbers together, and all the variables

8.5b-43.75=0

We move all terms containing b to the left, all other terms to the right

8.5b=43.75

b=43.75/8.5

b=5+1/6.8

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