3. Найдите значение выражений: a) 9\(\frac{4}{15}\) + 11\(\frac{2}{15}\); б) 4\(\frac{8}{11}\) + 8\(\frac{5}{11}\); в) 11\(\frac{9}{19}\) - 5\(\frac{4}{19}\); г) 16\(\frac{1}{8}\) - 7\(\frac{5}{8}\); д) 7\(\frac{2}{12}\) * 24/49; е) 35\(\frac{5}{9}\) * 51/4; ж) 6 : 18/35; з) 17 : 2\(\frac{11}{32}\)

a) 9\(\frac{4}{15}\) + 11\(\frac{2}{15}\) = (9+11) + (\(\frac{4}{15}\) + \(\frac{2}{15}\)) = 20 + \(\frac{6}{15}\) = 20 \(\frac{2}{5}\) b) 4\(\frac{8}{11}\) + 8\(\frac{5}{11}\) = (4+8) + (\(\frac{8}{11}\) + \(\frac{5}{11}\)) = 12 + \(\frac{13}{11}\) = 12 + 1\(\frac{2}{11}\) = 13\(\frac{2}{11}\) в) 11\(\frac{9}{19}\) - 5\(\frac{4}{19}\) = (11-5) + (\(\frac{9}{19}\) - \(\frac{4}{19}\)) = 6 + \(\frac{5}{19}\) = 6\(\frac{5}{19}\) г) 16\(\frac{1}{8}\) - 7\(\frac{5}{8}\) = (16-7) + (\(\frac{1}{8}\) - \(\frac{5}{8}\)) = 9 - \(\frac{4}{8}\) = 8 + 1 - \(\frac{1}{2}\) = 8\(\frac{1}{2}\) д) 7\(\frac{2}{12}\) * \(\frac{24}{49}\) = \(\frac{86}{12}\) * \(\frac{24}{49}\) = \(\frac{86}{6}\) * \(\frac{12}{49}\) = \(\frac{43}{3}\) * \(\frac{12}{49}\) = \(\frac{43}{1}\) * \(\frac{4}{49}\) = \(\frac{172}{49}\) = 3 \(\frac{25}{49}\) е) 35\(\frac{5}{9}\) * \(\frac{51}{4}\) = \(\frac{320}{9}\) * \(\frac{51}{4}\) = \(\frac{80}{3}\) * \(\frac{51}{1}\) = \(\frac{80}{1}\) * \(\frac{17}{1}\) = 1360 ж) 6 : \(\frac{18}{35}\) = 6 * \(\frac{35}{18}\) = \(\frac{1}{1}\) * \(\frac{35}{3}\) = \(\frac{35}{3}\) = 11 \(\frac{2}{3}\) з) 17 : 2\(\frac{11}{32}\) = 17 : \(\frac{75}{32}\) = 17 * \(\frac{32}{75}\) = \(\frac{544}{75}\) = 7 \(\frac{19}{75}\)