问题描述:
先约分,再化成带分数 12分之42, 4/12, 18/63, 9/21, 42/28,56/49,12
先约分,再化成带分数 12分之42, 4/12, 18/63, 9/21, 42/28, 56/49, 12/36
先约分,再化成带分数 12分之42, 4/12, 18/63, 9/21, 42/28, 56/49, 12/36
问题解答:
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