8又5分之4÷[87+0.625××(2又4分之3-1.15)] 能简便就简便
问题描述:
8又5分之4÷[87+0.625××(2又4分之3-1.15)] 能简便就简便
答
8又5分之4÷[87+0.625××(2又4分之3-1.15)]
=8.8÷[87+0.625×(2.75-1.15)]
=8.8÷[87+0.625×1.6]
=8.8÷[87+1]
=8.8÷88
=0.1