(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=?
(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=?
人气：259 ℃ 时间：2020-04-10 07:53:02
解答
(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=(+0.7)+(-0.3)+(-0.4)+(+0.6)+(-0.1)+(-0.6)+(-0.2)=(+0.7)+(-0.3)+(-0.4)+(-0.1)+(-0.2)=(-0.1)+(-0.2)=-0.3
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