这道题95%以上的孩子不会做，家长用二元一次方程组去教，孩子听不懂怎么办呢？从问题本质出发！
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这道题95%以上的孩子不会做，家长用二元一次方程组去教，孩子听不懂怎么办呢？从问题本质出发！家长数学辅导| 数学思维训练| ...
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