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Algebra, fractions and numbers

Source: Polish Junior Math Olympiad 2020 Finals

October 23, 2020
algebra

Problem Statement

Let xx, yy, zz be non-zero real numbers, such that x+y+z=0x + y + z = 0 and the numbers \frac{x}{y} + \frac{y}{z} + \frac{z}{x}   \text{and}   \frac{x}{z} + \frac{z}{y} + \frac{y}{x} + 1 are equal. Determine their common value.