10．约分．
0 154723 154731 154737 154741 154747 154749 154753 154759 154761 154767 154773 154777 154779 154783 154789 154791 154797 154801 154803 154807 154809 154813 154815 154817 154818 154819 154821 154822 154823 154825 154827 154831 154833 154837 154839 154843 154849 154851 154857 154861 154863 154867 154873 154879 154881 154887 154891 154893 154899 154903 154909 154917 199269
| $\frac{15}{24}$= | $\frac{9}{12}$= | $\frac{60}{75}$= | $\frac{34}{102}$= |