2f+7=31

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Solution for 2f+7=31 equation: 



2f+7=31

We move all terms to the left:

2f+7-(31)=0

We add all the numbers together, and all the variables

2f-24=0

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

2f=24

f=24/2

f=12

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