首页 > 娱乐 > 作者:YD1662025-05-22 02:00:36
同分母分数相加减,同分母分数相加减,分母不变,分子相加减,最后要化成最简分数。异分母分数相加减:异分母分数相加,先通分,再按同分母分数相加减法去计算,最后要化成最简分数
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