分子が1になる約分
3 3
6 9
5 4
30 20
7 2
35 4
4 6
36 18
8 8
24 64
6 2
36 12
3 7
24 21
6 6
36 18
6 3
42 18
4 3
12 27
7 3
63 27
5 7
10 21
2 6
4 18 =
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所要時間: 分 秒 15/385
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