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数学7上：数轴上六个点，且AB=BC=CD=DE=EF，如何求原点的位置？
数学7上：数轴上六个点，且AB=BC=CD=DE=EF，如何求原点的位置？
初中数学，数轴动点问题，绝对值最值，基础训练，培优专题32/100
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