8⼀9-1⼀7+1⼀9用简便算法应该怎么算?

2024-11-18 05:57:49
推荐回答(2个)
回答1:

解:简便计算方法如下
8/9-1/7+1/9
=8/9+1/9-1/7
=1-1/7
=6/7

回答2: