Найдите сумму.
1) $3\frac{7}{16} + 2\frac{5}{32} = 3 + \frac{7}{16} + 2 + \frac{5}{32} = ( + ) + (- + -) =$
2) $1\frac{1}{12} + 3\frac{4}{9} = $
3) $4\frac{1}{6} + 5\frac{3}{14} + 6\frac{2}{21} =$
$3\frac{7}{16} + 2\frac{5}{32} = 3 + \frac{7}{16} + 2 + \frac{5}{32} = (3 + 2) + (\frac{7}{16}^{/2} + \frac{5}{32}) = 5 + (\frac{14}{32} + \frac{5}{32}) = 5 + \frac{19}{32} = 5\frac{19}{32}$
$1\frac{1}{12} + 3\frac{4}{9} = 1 + \frac{1}{12} + 3 + \frac{4}{9} = (1 + 3) + (\frac{1}{12}^{/3} + \frac{4}{9}^{/4}) = 4 + (\frac{3}{36} + \frac{16}{36}) = 4 + \frac{19}{36} = 4\frac{19}{36}$
$4\frac{1}{6} + 5\frac{3}{14} + 6\frac{2}{21} = 4 + \frac{1}{6} + 5 + \frac{3}{14} + 6 + \frac{2}{21} = (4 + 5 + 6) + (\frac{1}{6}^{/7} + \frac{3}{14}^{/3} + \frac{2}{21}^{/2}) = 15 + (\frac{7}{42} + \frac{9}{42} + \frac{4}{42}) = 15 + \frac{20}{42} = 15 + \frac{10}{21} = 15\frac{10}{21}$
Пожауйста, оцените решение
