九分之七除以五分之四加九分之二乘以十一分之五

2024-11-08 06:49:18
推荐回答(1个)
回答1:

7/9÷4/5+2/9×5/4
=7/9×5/4+2/9×5/4
=(7/9+2/9)×5/4
=1×5/4
=5/4