Ш) 23 \(\frac{1}{5}\) - 17 \(\frac{8}{19}\)

Ш) 23 \(\frac{1}{5}\) - 17 \(\frac{8}{19}\) = \(\frac{23 \cdot 5 + 1}{5}\) - \(\frac{17 \cdot 19 + 8}{19}\) = \(\frac{115 + 1}{5}\) - \(\frac{323 + 8}{19}\) = \(\frac{116}{5}\) - \(\frac{331}{19}\) = \(\frac{116 \cdot 19}{5 \cdot 19}\) - \(\frac{331 \cdot 5}{19 \cdot 5}\) = \(\frac{2204}{95}\) - \(\frac{1655}{95}\) = \(\frac{2204 - 1655}{95}\) = \(\frac{549}{95}\) = 5 \(\frac{74}{95}\)

Ответ: 5 \(\frac{74}{95}\)