首页 > 经验 > 作者:YD1662025-06-11 06:46:33
乐乐的贴纸正好是笑笑的4倍时, 笑笑有: (12+15)÷(4-1) =27÷3 =9张 笑笑和乐乐原来各有:9+12=21张
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