Ответ:

ж) \(8-\frac{9}{11}=7\frac{11}{11}-\frac{9}{11}=7\frac{2}{11}\).

з) \(5-2\frac{3}{5}=4\frac{5}{5}-2\frac{3}{5}=2\frac{2}{5}\).

и) \(3\frac{2}{9}+6=9\frac{2}{9}\).

к) \(5\frac{2}{13}+7\frac{11}{13}=12\frac{13}{13}=13\).

л) \(3-\frac{5}{6}=2\frac{6}{6}-\frac{5}{6}=2\frac{1}{6}\).

м) \(9-2\frac{8}{9}=8\frac{9}{9}-2\frac{8}{9}=6\frac{1}{9}\).

н) \(5-4\frac{3}{8}=4\frac{8}{8}-4\frac{3}{8}=\frac{5}{8}\).