Question

Помогите прошу дам 20 баллов пдпжвжаоа​

Answer 1

$\frac{3}{7} + ( \frac{5}{9} + \frac{2}{7} ) = \frac{3}{7} + ( \frac{35 + 18}{63} ) = \frac{3}{7} + \frac{53}{63} = \frac{27 + 53}{63} = \frac{80}{63} = 1 \frac{17}{63}$

$( \frac{5}{16} + \frac{19}{32} ) + \frac{11}{16} + \frac{25}{32} = ( \frac{10 + 19}{32} ) + \frac{11}{16} + \frac{25}{32} = \frac{29}{32} + \frac{11}{16} + \frac{25}{32} = \frac{29 + 25}{32} + \frac{11}{16} = \frac{54}{32} + \frac{11}{16} = \frac{27}{16} + \frac{11}{16} = \frac{27 + 11}{16} = \frac{38}{16} = \frac{19}{8} = 2 \frac{3}{8}$