筒便计算，要过程

更新时间：2018-04-30 20:41:37 129次访问

（9.3×5/6-7.3)÷4/9 14/5-(2.8-5/7)+2/7 9.4×1/4+0.25×5/3 13/5×8×5/13×1.2

（9.3×5/6-7.3)÷4/9   

=（3.1*5/2-7.3)*9/4

=(15.5/2-14.6/2)*9/4

=0.9/2*9/4

=9/20*9/4

=81/80

14/5-(2.8-5/7)+2/7    

=2.8-2.8+5/7+2/7

=1

9.4×1/4+0.25×5/3   

=47/5*1/4+1/4*5/3

=1/4*(47/5+5/3)

=1/4*166/3

=166/12

=83/6

13/5×8×5/13×1.2

=13/5*5/13*8*1.2

=8*1.2

=9.6

抱歉这个 我只会一步一步来