Question

помогите я хочу проверить себя
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Answer 1

$1) \frac{2}{3} - \frac{1}{5} = \frac{7}{15} \\ \frac{3}{4} + \frac{1}{10} = \frac{17}{20} \\ \frac{5}{8} - \frac{3}{10} = \frac{13}{40} \\ \frac{2}{7} + \frac{1}{3} = \frac{13}{21}$

$2) \frac{1}{6} + \frac{1}{8} = \frac{7}{24} \\ \frac{5}{8} - \frac{1}{3} = \frac{7}{24} \\ \frac{2}{3} + \frac{3}{10} = \frac{29}{30} \\ \frac{11}{12} - \frac{3}{8} = \frac{13}{24}$