1130. Выполните действия: a) 6/19 - 3/19 + 15/19 б) 19/21 - 17/21 + 9/21 в) 25/32 - 6/32 + 19/32

Выполняем действия с дробями: a) \(\frac{6}{19} - \frac{3}{19} + \frac{15}{19} = \frac{6 - 3 + 15}{19} = \frac{18}{19}\) б) \(\frac{19}{21} - \frac{17}{21} + \frac{9}{21} = \frac{19 - 17 + 9}{21} = \frac{11}{21}\) в) \(\frac{25}{32} - \frac{6}{32} + \frac{19}{32} = \frac{25 - 6 + 19}{32} = \frac{38}{32} = \frac{19}{16} = 1\frac{3}{16}\)