2. Найдите значения выражений. a) \(\frac{22}{23} - \frac{18}{23} + \frac{5}{23}\) б) \(8\frac{7}{9} + (7\frac{5}{9} - 4\frac{4}{9})\) в) \(11\frac{2}{19} - (3\frac{17}{19} + 6\frac{14}{19})\)

1. a) \(\frac{22}{23} - \frac{18}{23} + \frac{5}{23} = \frac{22 - 18 + 5}{23} = \frac{4 + 5}{23} = \frac{9}{23}\)
2. б) \(8\frac{7}{9} + (7\frac{5}{9} - 4\frac{4}{9}) = 8\frac{7}{9} + 3\frac{1}{9} = 11\frac{8}{9}\)
3. в) \(11\frac{2}{19} - (3\frac{17}{19} + 6\frac{14}{19}) = 11\frac{2}{19} - (9\frac{31}{19}) = 11\frac{2}{19} - 10\frac{12}{19} = 10\frac{21}{19} - 10\frac{12}{19} = \frac{9}{19}\)

Ответ:

<ol>
  <li>a) \(\frac{9}{23}\)</li>
  <li>б) \(11\frac{8}{9}\)</li>
  <li>в) \(\frac{9}{19}\)</li>
</ol>