231. Вычисли сумму: а) \(5\frac{3}{11}+2\); б) \(8\frac{1}{3}+1\frac{1}{3}\); в) \(7\frac{1}{5}+2\frac{1}{5}\); г) \(3\frac{4}{7}+1\frac{1}{7}\); д) \(2\frac{7}{9}+1\frac{5}{9}\).

а) \(5\frac{3}{11}+2=7\frac{3}{11}\).

б) \(8\frac{1}{3}+1\frac{1}{3}=9\frac{2}{3}\).

в) \(7\frac{1}{5}+2\frac{1}{5}=9\frac{2}{5}\).

г) \(3\frac{4}{7}+1\frac{1}{7}=4\frac{5}{7}\).

д) \(2\frac{7}{9}+1\frac{5}{9}=3\frac{12}{9}=4\frac{1}{3}\).

Ответ: \(7\frac{3}{11};\ 9\frac{2}{3};\ 9\frac{2}{5};\ 4\frac{5}{7};\ 4\frac{1}{3}\).