3又20分之7/【5又4分之3-4.5*(20%+3分之1)】=
问题描述:
3又20分之7/【5又4分之3-4.5*(20%+3分之1)】=
答
=3.35/(5.75-4.5*0.2-4.5*3分之1)
=3.35/(5.75-0.9-1.5)
=3.35/3.35
=1