Задание №4. Размести дроби в порядке возрастания: \(\frac{67}{68}\), \(\frac{9}{13}\), \(\frac{3}{4}\), \(\frac{8}{9}\), \(\frac{6}{13}\), \(\frac{7}{22}\), \(\frac{8}{15}\), \(\frac{7}{19}\), \(\frac{5}{21}\).

Сравним значения дробей:

1. \(\frac{5}{21}\approx0.238\);< /li>
2. \(\frac{7}{22}\approx0.318\);< /li>
3. \(\frac{7}{19}\approx0.368\);< /li>
4. \(\frac{6}{13}\approx0.462\);< /li>
5. \(\frac{8}{15}\approx0.533\);< /li>
6. \(\frac{9}{13}\approx0.692\);< /li>
7. \(\frac{3}{4}=0.75\);< /li>
8. \(\frac{8}{9}\approx0.889\);< /li>
9. \(\frac{67}{68}\approx0.985\).

Ответ: \(\frac{5}{21}<\frac{7}{22}<\frac{7}{19}<\frac{6}{13}<\frac{8}{15}<\frac{9}{13}<\frac{3}{4}<\frac{8}{9}<\frac{67}{68}\).