Решение:
\(\frac{x}{2}\) - \(\frac{x}{3}\) - \(\frac{x}{6}\) = \(\frac{3x}{6}\) - \(\frac{2x}{6}\) - \(\frac{x}{6}\) = \(\frac{3x - 2x - x}{6}\) = \(\frac{0}{6}\) = 0
Ответ: 0