用1,2,3,4,5,6,7,8,9这九个数字写出三个大小相等的分数.(每个数字只允许用一次). 例如:3/6=7/14=29/58.

问题描述:

用1,2,3,4,5,6,7,8,9这九个数字写出三个大小相等的分数.(每个数字只允许用一次).
例如:

3
6
7
14
29
58

符合条件的分数有:
(1)

3
21
=
7
49
=
8
56

(2)
3
6
=
7
14
=
29
58

(3)
3
6
=
9
18
=
27
54

(4)
3
27
=
6
54
=
9
81

(5)
2
4
=
3
6
=
79
158
.(答案不唯一)