5\6*1\13+5\9*2\13+5\8*6\13
=5\6*1\13+5\9*2*1\13+5\8*6*1\13
=(5/6+10/9+30/8)*1/13
=205/36*1/13
=205/468
5\6*1\13+5\9*2\13+5\8*6\13的简便运算,速求!
5\6*1\13+5\9*2\13+5\8*6\13的简便运算,速求!
其他人气:220 ℃时间:2019-11-18 09:10:25
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