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数学7上：怎么求小李开车多长时间，两车相距5千米？一元一次方程
数学7上：怎么求小李开车多长时间，两车相距5千米？一元一次方程
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546/581
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