5\6*1\13+5\9*2\13+5\8*6\13的简便运算,速求!
问题描述：
5\6*1\13+5\9*2\13+5\8*6\13的简便运算,速求!
答
如果你确定题目没错的话
5/6*1/13+5/9*2/13+5/8*6/13
=5/6*1/13+10/9*1/13+15/4*1/13
=(5/6+10/9+15/4)*1/13
=205/36*1/13
=205/468
祝学习进步
答
5\6*1\13+5\9*2\13+5\8*6\13
=5/ (6x13) + 10/ (9x13) + 30/ (13x8)
= (60+80+270) / (6x13x 12)
= 410 / (6x13x 12)
= 205 / (39x12)
=205/468
答
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