两个有理数相减,被减数一定大于减数对不对?若|x|+|y|=0,则x=__________,y=__________.若|a|+a=2a,则a≥__________.若|a|=|b|,则a与b是__________.如果a、b都在原点的左边,那么(-a)+(-b)__________0.如果m
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![两个有理数相减,被减数一定大于减数对不对?若|x|+|y|=0,则x=__________,y=__________.若|a|+a=2a,则a≥__________.若|a|=|b|,则a与b是__________.如果a、b都在原点的左边,那么(-a)+(-b)__________0.如果m](/uploads/image/z/6927635-11-5.jpg?t=%E4%B8%A4%E4%B8%AA%E6%9C%89%E7%90%86%E6%95%B0%E7%9B%B8%E5%87%8F%2C%E8%A2%AB%E5%87%8F%E6%95%B0%E4%B8%80%E5%AE%9A%E5%A4%A7%E4%BA%8E%E5%87%8F%E6%95%B0%E5%AF%B9%E4%B8%8D%E5%AF%B9%3F%E8%8B%A5%7Cx%7C%2B%7Cy%7C%3D0%2C%E5%88%99x%3D__________%2Cy%3D__________.%E8%8B%A5%7Ca%7C%2Ba%3D2a%2C%E5%88%99a%E2%89%A5__________.%E8%8B%A5%7Ca%7C%3D%7Cb%7C%2C%E5%88%99a%E4%B8%8Eb%E6%98%AF__________.%E5%A6%82%E6%9E%9Ca%E3%80%81b%E9%83%BD%E5%9C%A8%E5%8E%9F%E7%82%B9%E7%9A%84%E5%B7%A6%E8%BE%B9%2C%E9%82%A3%E4%B9%88%EF%BC%88-a%EF%BC%89%2B%EF%BC%88-b%EF%BC%89__________0.%E5%A6%82%E6%9E%9Cm)
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