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3/5*(3/10-2/15)+5/8简便计算
人气:334 ℃ 时间:2020-02-05 07:09:11
解答
3/5*(3/10-2/15)+5/8
=3/5*(3/10-2/15)*5*30/150+5/8
=3*(3*3-2*2)/150+5/8
=1/10+5/8
=0.1+0.625
=0.725Are you sure?Yesok不用谢
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