7: 4/5 6/5 2/3 4/7 1/3 3/4 5/3
8: 2/8 1/4 5/4 10/8
9: 略
10: 1/9 2/9 4/9 5/9 7/9 8/9
11: > < =
12: 1/3 6/5 2/3 1/4
13: 3/5 2/5
1/4 5/12
14: 3/5 9/20 37/100 3/4 3/2 13/4
15: ① 2/5 4/15 1/3
② 略
提交 重置