能简算的简算,1/4除以(3-5/13-8/13)

问题描述:

能简算的简算,1/4除以(3-5/13-8/13)

1/4除以(3-5/13-8/13)
=1/4/[3-(5/13+8/13)]
=1/4/2
=1/8

1/8

1/4除以(3-5/13-8/13)
=1/4÷【3-(5/13+8/13)]
=1/4÷(3-1)
=1/4÷2
=1/8