Question

помогите пожалуйстааа​

Answer 1

$1 - \frac{2}{5} = \frac{5}{5} - \frac{2}{5} = \frac{3}{5}$

$3 \frac{2}{7} + 5 \frac{4}{7} = 8 \frac{6}{7}$

$\frac{3}{8} + 3 = 3 \frac{3}{8}$

$3 - \frac{2}{7} = 2 \frac{7}{7} - \frac{2}{7} = 2 \frac{5}{7}$

$\frac{8}{11} + \frac{7}{11} = \frac{8 + 7}{11} = \frac{15}{11}$

$9 - 6 \frac{2}{9} = 8 \frac{9}{9} - 6 \frac{2}{9} = 2 \frac{7}{9}$

$13 \frac{7}{15} - 7 = 6 \frac{7}{15}$