9分之4乘5分之4加9分之14除4分之5

2025-12-18 05:13:35
推荐回答(1个)
回答1:

4/9*4/5+(14/9)/(5/4)
=4/9*4/5+14/9*4/5
=16/45+56/45
=72/45
=8/5