Question 7
Encontrar todas las soluciones enteras positivas de
$$
\frac{1}{a+b}+\frac{1}{b+c}+\frac{1}{c+a}+\frac{1}{a+b+c-2}=1
$$
$$
\frac{1}{a+b}+\frac{1}{b+c}+\frac{1}{c+a}+\frac{1}{a+b+c-2}=1
$$
MathNet 2026 — Part 04 Question 7
Math Olympiad Vault · MathNet 2026 — Part 04