9⼀11-5⼀7+2⼀11-2⼀7怎么算?

2025-04-14 18:00:57
推荐回答(3个)
回答(1):

解:9/11-5/7+2/11-2/7
=(9/11+2/11)-(5/7+2/7)
=1-1
=0

回答(2):

=(9/11+2/11)-(5/7+2/7)
=11/11-7/7
=1-1
=0

回答(3):