Вычислите значение выражения.
1) $5\frac{16}{21} - 2\frac{5}{9} = $
2) $9\frac{5}{6} - 4\frac{9}{16} = $
$5\frac{16}{21} - 2\frac{5}{9} = (5 + \frac{16}{21}) - (2 + \frac{5}{9}) = 5 + \frac{16}{21} - 2 - \frac{5}{9} = (5 - 2) + (\frac{16}{21}^{/3} - \frac{5}{9}^{/7}) = 3 + (\frac{48}{63} - \frac{35}{63}) = 3 + \frac{13}{63} = 3\frac{13}{63}$
$9\frac{5}{6} - 4\frac{9}{16} = (9 + \frac{5}{6}) - (4 + \frac{9}{16}) = 9 + \frac{5}{6} - 4 - \frac{9}{16} = (9 - 4) + (\frac{5}{6}^{/8} - \frac{9}{16}^{/3}) = 5 + (\frac{40}{48} - \frac{27}{48}) = 5\frac{13}{48}$
Пожауйста, оцените решение
