问题 解答题
化简下列各数.+(-1
2
3
)
,-(+3.69),-(-520),-[-(+4.98)],+[-(+58.6)].
答案

+(-1

2
3
)=-1
2
3
,-(+3.69)=-3.69,-(-520)=520,-[-(+4.98)]=4.98,+[-(+58.6)]=-58.6.

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