Выполните сложение или вычитание дробей.

**Ответ:** 1-й столбик: $\frac{7}{48} + \frac{11}{36} = \frac{21+44}{144} = \frac{65}{144}$ $\frac{26}{45} - \frac{16}{30} = \frac{52-48}{90} = \frac{4}{90} = \frac{2}{45}$ $\frac{13}{18} - \frac{5}{24} = \frac{52-15}{72} = \frac{37}{72}$ $1 + \frac{3}{8} = 1\frac{3}{8}$ $2 - \frac{5}{6} = 1\frac{1}{6}$ 2-й столбик: $\frac{5}{13} + \frac{7}{26} = \frac{10+7}{26} = \frac{17}{26}$ $\frac{11}{63} - \frac{1}{9} = \frac{11-7}{63} = \frac{4}{63}$ $\frac{12}{15} - \frac{3}{5} = \frac{12-9}{15} = \frac{3}{15} = \frac{1}{5}$ $5 + \frac{4}{9} = 5\frac{4}{9}$ $4 - \frac{7}{11} = 3\frac{4}{11}$ 3-й столбик: $\frac{7}{12} + \frac{4}{36} = \frac{21+4}{36} = \frac{25}{36}$ $\frac{15}{27} - \frac{1}{9} = \frac{15-3}{27} = \frac{12}{27} = \frac{4}{9}$ $\frac{11}{14} - \frac{1}{7} = \frac{11-2}{14} = \frac{9}{14}$ $4 + \frac{2}{7} = 4\frac{2}{7}$ $5 - \frac{4}{9} = 4\frac{5}{9}$ Нижний блок: $2 + \frac{3}{5} = 2\frac{3}{5}$ $3 - \frac{10}{17} = 2\frac{7}{17}$ $22\frac{11}{15} - 22 = \frac{11}{15}$ $12\frac{9}{25} + 7\frac{32}{50} = 12\frac{18}{50} + 7\frac{32}{50} = 19\frac{50}{50} = 20$ $5\frac{3}{20} - 4\frac{7}{10} = 5\frac{3}{20} - 4\frac{14}{20} = 4\frac{23}{20} - 4\frac{14}{20} = \frac{9}{20}$ $11\frac{1}{4} + 3\frac{7}{10} = 11\frac{5}{20} + 3\frac{14}{20} = 14\frac{19}{20}$ $2 + \frac{4}{7} = 2\frac{4}{7}$ $5 - \frac{12}{15} = 4\frac{3}{15} = 4\frac{1}{5}$ $13\frac{11}{12} - 10 = 3\frac{11}{12}$ $15\frac{7}{24} + 8\frac{1}{3} = 15\frac{7}{24} + 8\frac{8}{24} = 23\frac{15}{24} = 23\frac{5}{8}$ $4\frac{4}{15} - 2\frac{1}{30} = 4\frac{8}{30} - 2\frac{1}{30} = 2\frac{7}{30}$ $12\frac{1}{5} + 2\frac{5}{10} = 12\frac{2}{10} + 2\frac{5}{10} = 14\frac{7}{10}$ $6 + \frac{2}{3} = 6\frac{2}{3}$ $10 - \frac{15}{21} = 9\frac{6}{21} = 9\frac{2}{7}$ $15\frac{1}{7} - 5 = 10\frac{1}{7}$ $16\frac{2}{9} + 2\frac{1}{18} = 16\frac{4}{18} + 2\frac{1}{18} = 18\frac{5}{18}$ $3\frac{4}{17} - 2\frac{1}{34} = 3\frac{8}{34} - 2\frac{1}{34} = 1\frac{7}{34}$ $14\frac{2}{3} + 3\frac{4}{15} = 14\frac{10}{15} + 3\frac{4}{15} = 17\frac{14}{15}$