已知a的绝对值分之a+b的绝对值分之b=0,则ab的绝对值分之ab的值为若x,y为有理数,且丨x=1丨+丨y-1丨=0,则x+y=?一个数的相反数的绝对值等于这个数的绝对值得相反数,这个数是?若丨x丨=7,则x=?若丨x-2
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![已知a的绝对值分之a+b的绝对值分之b=0,则ab的绝对值分之ab的值为若x,y为有理数,且丨x=1丨+丨y-1丨=0,则x+y=?一个数的相反数的绝对值等于这个数的绝对值得相反数,这个数是?若丨x丨=7,则x=?若丨x-2](/uploads/image/z/243814-22-4.jpg?t=%E5%B7%B2%E7%9F%A5a%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%88%86%E4%B9%8Ba%2Bb%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%88%86%E4%B9%8Bb%3D0%2C%E5%88%99ab%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%88%86%E4%B9%8Bab%E7%9A%84%E5%80%BC%E4%B8%BA%E8%8B%A5x%2Cy%E4%B8%BA%E6%9C%89%E7%90%86%E6%95%B0%2C%E4%B8%94%E4%B8%A8x%3D1%E4%B8%A8%2B%E4%B8%A8y-1%E4%B8%A8%3D0%2C%E5%88%99x%2By%3D%3F%E4%B8%80%E4%B8%AA%E6%95%B0%E7%9A%84%E7%9B%B8%E5%8F%8D%E6%95%B0%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E7%AD%89%E4%BA%8E%E8%BF%99%E4%B8%AA%E6%95%B0%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%BE%97%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E8%BF%99%E4%B8%AA%E6%95%B0%E6%98%AF%3F%E8%8B%A5%E4%B8%A8x%E4%B8%A8%3D7%2C%E5%88%99x%3D%3F%E8%8B%A5%E4%B8%A8x-2)
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