(3/4-3/4*5/6)/2/3用简便方法= 3/4 ( 1- 5/6 ) x 3/2 = 3/4 x 1/6 x 3/2 = 1/4 x 1/2 x 3/2 = 16分之3 施主,我看你骨骼清奇,器宇轩昂,且有慧根,乃是万中无一的武林奇才.潜心修习,将来必成大器,鄙人有个小小的考验请...