3个回答
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通分
5/6 = (5 * (8 * 7 * 9 * 18)) / (6 * (8 * 7 * 9 * 18))
7/8 = (7 * (6 * 7 * 9 * 18)) / (8 * (6 * 7 * 9 * 18))
3/7 = (3 * (6 * 8 * 9 * 18)) / (7 * (6 * 8 * 9 * 18))
4/9 = (4 * (6 * 8 * 7 * 18)) / (9 * (6 * 8 * 7 * 18))
7/18 = (7 * (6 * 7 * 8 * 9)) / (18 * (6 * 7 * 8 * 9))
比较大小
5 * 8 * 7 * 9 * 18 = 45360
7 * 6 * 7 * 9 * 18 = 47628
3 * 6 * 8 * 9 * 18 = 23328
4 * 6 * 8 * 7 * 18 = 24192
7 * 6 * 7 * 8 * 9 = 21168
7/8 > 5/6 > 4/9 > 3/7 > 7/18
5/6 = (5 * (8 * 7 * 9 * 18)) / (6 * (8 * 7 * 9 * 18))
7/8 = (7 * (6 * 7 * 9 * 18)) / (8 * (6 * 7 * 9 * 18))
3/7 = (3 * (6 * 8 * 9 * 18)) / (7 * (6 * 8 * 9 * 18))
4/9 = (4 * (6 * 8 * 7 * 18)) / (9 * (6 * 8 * 7 * 18))
7/18 = (7 * (6 * 7 * 8 * 9)) / (18 * (6 * 7 * 8 * 9))
比较大小
5 * 8 * 7 * 9 * 18 = 45360
7 * 6 * 7 * 9 * 18 = 47628
3 * 6 * 8 * 9 * 18 = 23328
4 * 6 * 8 * 7 * 18 = 24192
7 * 6 * 7 * 8 * 9 = 21168
7/8 > 5/6 > 4/9 > 3/7 > 7/18
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