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已知｜a｜=4，｜b｜=2，且a>b，怎么求a+b的值？绝对值计算经典考题
已知|a|=4，|b|=2，且a＞b，怎么求a+b的值？
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132/257
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