3个回答
2011-01-23
展开全部
0.1-0.2+0.3+0.4-0.5=0.1
(0.1+0.2)/0.3 -0.4-0.5=0.1
0.1+0.2-0.3-0.4+0.5=0.1
(0.1+0.2-0.3)/(0.4+0.5)=0
(0.1+0.2-0.3)/(0.4-0.5)=0
(0.1+0.2)/0.3 -0.4-0.5=0.1
0.1+0.2-0.3-0.4+0.5=0.1
(0.1+0.2-0.3)/(0.4+0.5)=0
(0.1+0.2-0.3)/(0.4-0.5)=0
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