Выполните действия:
а) $\frac{6}{19} - \frac{3}{19} + \frac{15}{19}$;
б) $\frac{19}{21} - \frac{17}{21} + \frac{9}{21}$;
в) $\frac{25}{32} - \frac{6}{32} + \frac{19}{32}$.
$\frac{6}{19} - \frac{3}{19} + \frac{15}{19} = \frac{6 - 3 + 15}{19} = \frac{18}{19}$
$\frac{19}{21} - \frac{17}{21} + \frac{9}{21} = \frac{19 - 17 + 9}{21} = \frac{11}{21}$
$\frac{25}{32} - \frac{6}{32} + \frac{19}{32} = \frac{25 - 6 + 19}{32} = \frac{38}{32} = 1\frac{6}{32}$
Пожауйста, оцените решение
