问题 填空题
-(-82)=______;-(+3.73)=______;-(-
2
7
)
=______;-(+19
1
3
)
=______.
答案

根据相反数定义可知-(-82)=82,-(+3.73)=-3.73;-(-

2
7
)=
2
7
;-(+19
1
3
)=-19
1
3

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