2016-04-07 16:04发布
40×(1-1/3)×(1-3/5)
=40×2/3×2/5
=160/15(千克)
40*(1-1/3-3/5)
=40*1/15
=8/3千克
40 - 40 X 1/3 - 40 X (1-1/3) X 3/5
= 40 - 40/3 - 40 X 2/3 X 3/5
= 32/3 千克
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40×(1-1/3)×(1-3/5)
=40×2/3×2/5
=160/15(千克)
40*(1-1/3-3/5)
=40*1/15
=8/3千克
40 - 40 X 1/3 - 40 X (1-1/3) X 3/5
= 40 - 40/3 - 40 X 2/3 X 3/5
= 32/3 千克
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