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数学7上：在数轴上，如何找出使得|x+2|+|x-5|=7的所有整数点x？
数学7上：在数轴上，如何找出使得|x+2|+|x-5|=7的所有整数点x？
数学7年级上册：相反数，数轴，绝对值化简，培优拓展经典考试题181/257
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