1.25x5分之4十0.8十3又4分之3
问题描述:
1.25x5分之4十0.8十3又4分之3
答
1.25x5分之4十0.8十3又4分之3
=5/4*4/5+4/5+15/4
=1+16/20+75/20
=1+91/20
=5又20分之11