## Editorial for A Fraction Problem

Remember to use this editorial

**only**when stuck, and**not to copy-paste code from it**. Please be respectful to the problem author and editorialist.**Submitting an official solution before solving the problem yourself is a bannable offence.**Author:

One possible answer would be \(e = a+c\) and \(f = b+d\).

The proof is left as an exercise for the reader. Hint, solve this inequality by expanding everything:

\[ \frac{a}{b} < \frac{a+c}{b+d} < \frac{c}{d} \]

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