f+7.4=3.9

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Solution for f+7.4=3.9 equation: 



f+7.4=3.9

We move all terms to the left:

f+7.4-(3.9)=0

We add all the numbers together, and all the variables

f+3.5=0

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

f=-3.5

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