简便计算:5⼀9-5⼀11+4⼀9-8⼀11=

2024-12-28 15:21:22
推荐回答(3个)
回答1:

5/9-5/11+4/9-8/11
=(5/9+4/9)-(5/11+8/11)
=1-13/11
=-2/11

回答2:

5/9-5/11+4/9-8/11
=(5/9+4/9)-(5/11+8/11)
=1-13/11
=-2/11
祝你好运

回答3:

5/9-5/11+4/9-8/11=(5/9+4/9)-(5/11+8/11)=9/9-13/11=1-(1+2/11)=-2/11