-2011
经过绝对值后的数都大于等于0,它们两个还互为相反数,所以都是0,代入即可.
已知2-b的绝对值与a+4的绝对值互为相反数,求 ab-2003的值.
已知2-b的绝对值与a+4的绝对值互为相反数,求 ab-2003的值.
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