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六年级附加题，有点难度的折扣题，学生交白卷的原因是不理解题意
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App02:46![六年级期末考试，已知m[m(m+n)+n]=1，如何求m+n的值呢？求支援](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/0ad2b03dda674064af8026849f87c4f7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250107162721E1FD0FE2BAB6E066859D&requestFrom=704&version_code=80402&x-expires=1767774442&x-signature=e9%2Bail8tSPNDKGN2gaXtsceXZ4A%3D)
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