几道七年级数学题求解!急!是有理数绝对值那部分的:若 | a | = | b | 则:_____ 或 _____若a + b = 0 则:如果 | x | = a(a>0),则x有___个值,x=______它们是______数.化简.1. a>1,| a - 1 | 2. a
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![几道七年级数学题求解!急!是有理数绝对值那部分的:若 | a | = | b | 则:_____ 或 _____若a + b = 0 则:如果 | x | = a(a>0),则x有___个值,x=______它们是______数.化简.1. a>1,| a - 1 | 2. a](/uploads/image/z/1720223-71-3.jpg?t=%E5%87%A0%E9%81%93%E4%B8%83%E5%B9%B4%E7%BA%A7%E6%95%B0%E5%AD%A6%E9%A2%98%E6%B1%82%E8%A7%A3%21%E6%80%A5%21%E6%98%AF%E6%9C%89%E7%90%86%E6%95%B0%E7%BB%9D%E5%AF%B9%E5%80%BC%E9%82%A3%E9%83%A8%E5%88%86%E7%9A%84%EF%BC%9A%E8%8B%A5+%7C+a+%7C+%3D+%7C+b+%7C+%E5%88%99%EF%BC%9A_____+%E6%88%96+_____%E8%8B%A5a+%2B+b+%3D+0+++%E5%88%99%EF%BC%9A%E5%A6%82%E6%9E%9C+%7C+x+%7C+%EF%BC%9D+a%EF%BC%88a%EF%BC%9E0%EF%BC%89%2C%E5%88%99x%E6%9C%89___%E4%B8%AA%E5%80%BC%2Cx%EF%BC%9D______%E5%AE%83%E4%BB%AC%E6%98%AF______%E6%95%B0.%E5%8C%96%E7%AE%80.1.+a%EF%BC%9E1%2C%7C+a++-+1+%7C++++++++++++2.+a)
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