6: 10 10/3 27/2 16 22/3 7/2 5/2 63/2
7: ① 8 25 81/2 9/2 4 8
② 6 15/2 7/5 1/6 2/15 5/7
8: 15 60 45
9: 3/4 2/3 2/3 5/16 6 2 /3 13/24 25/21
10: 1/10 7/8 7/5 18
11: 1/4 1/2 3/4 1 9/2
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