Решение:
Сократим дроби:
- \( \frac{6}{9} = \frac{6:3}{9:3} = \frac{2}{3} \)
- \( \frac{20}{45} = \frac{20:5}{45:5} = \frac{4}{9} \)
- \( \frac{8}{12} = \frac{8:4}{12:4} = \frac{2}{3} \)
- \( \frac{36}{64} = \frac{36:4}{64:4} = \frac{9}{16} \)
- \( \frac{15}{80} = \frac{15:5}{80:5} = \frac{3}{16} \)
- \( \frac{24}{72} = \frac{24:24}{72:24} = \frac{1}{3} \)
- \( \frac{25}{120} = \frac{25:5}{120:5} = \frac{5}{24} \)
Ответ: \( \frac{2}{3}, \frac{4}{9}, \frac{2}{3}, \frac{9}{16}, \frac{3}{16}, \frac{1}{3}, \frac{5}{24} \).