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4*0.6+13/25*0.4+13/25*0.6简算
简算,谢
人气：498 ℃　时间：2020-05-11 19:31:16
解答
=4*0.6+13/25*(0.4+0.6)
=4*0.6+13*0.04
=4*0.6+4*0.13
=4*(0.6+0.13)
=4*0.73
=2.92
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