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“五羊杯”七年级数学竞赛题，质数m、n满足5m+7n=129，求m+n值
“五羊杯”初中七年级数学题，质数m、n满足5m+7n=129，求m+n值
人教版七年级数学，最常考考易错重要知识点、竞赛、综合压轴题0/284
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