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Решите задачу:

$\frac{15}{7} + \frac{4}{7} = \frac{20}{7} = 2 \frac{6}{7}$

$\frac{15}{8} + \frac{4}{8} = \frac{19}{8} = 2 \frac{3}{8}$

$\frac{26}{11} - \frac{10}{11} = \frac{16}{11} = 1 \frac{5}{11}$

$\frac{33}{10} - \frac{12}{10} = \frac{21}{10} = 2 \frac{1}{10}$

$\frac{15}{9} + \frac{2}{9} = \frac{17}{9} = 1 \frac{8}{9}$

$\frac{17}{5} + \frac{12}{5} = \frac{29}{5} = 5 \frac{4}{5}$

$\frac{16}{6} - \frac{5}{6} = \frac{11}{6} = 1 \frac{5}{6} \\ \frac{27}{4} - \frac{11}{4} = \frac{16}{4} = 4$

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