由题意得,-a≥0,
∴a≤0.
故答案为:≤.
一个数a的相反数是非负数,那么这个数a与0的大小关系是a_0.
一个数a的相反数是非负数,那么这个数a与0的大小关系是a______0.
数学人气:414 ℃时间:2019-11-25 12:56:37
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