7⼀9-4⼀10+2⼀9-6⼀10怎样简便计算?

2025-04-05 18:37:47
推荐回答(1个)
回答1:

7/9-4/10+2/9-6/10
=7/9+2/9-(4/10+6/10)
=9/9-10/10
=1-1
=0