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8/9*[0.75-(5/16+0.25)]=
人气:214 ℃ 时间:2020-05-21 17:27:14
解答
8/9*[0.75-(5/16+0.25)]
=8/9*[3/4-(5/16+1/4)]
=8/9*[3/4-5/16-1/4]
=8/9*[2/4-5/16]
=8/9*[8/16-5/16]
=8/9*3/16
=1/6
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