怎样简便就怎样算 11分之18一(11分之7一8

2024-11-29 03:41:49
推荐回答(1个)
回答(1):

18/11-(7/11-8/11)
=18/11-7/11+8/11
=11/11+8/11
=1+8/11
=1又8/11