中间数是225,225-4x=1,所以x=56, 225+4*56=449
449
本帖于 2025-11-19 19:09:16 时间, 由普通用户 双喜临门2024 编辑
中间数是225,225-4x=1,所以x=56, 225+4*56=449
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