(6.25×9分之8-6分之11）×3分之2
问题描述：
(6.25×9分之8-6分之11）×3分之2
答
(6.25×8/9-11/6）×2/3
=(25/4×8/9-11/6）×2/3
=(25×2/9-11/6）×2/3
=(50/9-11/6）×2/3
=50/9×2/3-11/6×2/3
=100/27-11/9
=100/27-33/27
=67/27