№2. Вычислите: а) 14 − 6/9; б) 44 − 3 8/11; в) 23 12/13 + 7 2/13; г) 56 23/87 − 43 25/87; д) 23/30 − (1/6 + 2/5); е) 11/42 + (3/7 − 1/6)

1. а) \(14 - \frac{6}{9}=14-\frac{2}{3}=13\frac{1}{3}\).
2. б) \(44-3\frac{8}{11}=40\frac{3}{11}\).
3. в) \(23\frac{12}{13}+7\frac{2}{13}=30\frac{14}{13}=31\frac{1}{13}\).
4. г) \(56\frac{23}{87}-43\frac{25}{87}=12-\frac{2}{87}=11\frac{85}{87}\).
5. д) \(\frac{23}{30}-\left(\frac{1}{6}+\frac{2}{5}\right)=\frac{23}{30}-\left(\frac{5}{30}+\frac{12}{30}\right)=\frac{6}{30}=\frac{1}{5}\).
6. е) \(\frac{11}{42}+\left(\frac{3}{7}-\frac{1}{6}\right)=\frac{11}{42}+\left(\frac{18}{42}-\frac{7}{42}\right)=\frac{22}{42}=\frac{11}{21}\).

Ответ: а) \(13\frac{1}{3}\); б) \(40\frac{3}{11}\); в) \(31\frac{1}{13}\); г) \(11\frac{85}{87}\); д) \(\frac{1}{5}\); е) \(\frac{11}{21}\).