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数学7上：分别用多少布生产上衣和裤子，才能恰好配套？学浪计划
数学7上：分别用多少布生产上衣和裤子，才能恰好配套？配套问题
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327/581
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