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数学7上：如何安排工人，生产的铁片刚好配套？一元一次方程应用
数学7上：如何安排工人，生产的铁片刚好配套？一元一次方程应用
七年级数学，一元一次方程应用题，各种类别的题型，这里都有详解507/581
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