г) Если z = \(\frac{3}{19}\), то \(\frac{13}{19} - \frac{3}{19} - \frac{3}{19} = \frac{13-3-3}{19} = \frac{7}{19}\)
Если z = \(\frac{5}{19}\), то \(\frac{13}{19} - \frac{3}{19} - \frac{5}{19} = \frac{13-3-5}{19} = \(\frac{5}{19}\)
Если z = \(\frac{7}{19}\), то \(\frac{13}{19} - \frac{3}{19} - \frac{7}{19} = \frac{13-3-7}{19} = \frac{3}{19}\)
Ответ: \(\frac{7}{19}\), \(\frac{5}{19}\), \(\frac{3}{19}\)