11分之6*4分之3+0.75*11分之5用简便方法

问题描述:

11分之6*4分之3+0.75*11分之5用简便方法

(6/11)*(3/4)+0.75*(5/11)
=(6/11)*0.75+0.75*(5/11)
=0.75*(6/11+5/11)
=0.75*(11/11)
=0.75