4⼀9-(1⼀4+1⼀5)简算

2024-12-01 02:41:34
推荐回答(1个)
回答1:

4/9-(1/4+1/5)
=4/9-1/4-1/5
=3/9-1/5
=1/3-1/5
=5/15-3/15
=2/15