7⼀9乘15⼀11-7⼀9乘4⼀11简算

2024-12-29 18:24:56
推荐回答(1个)
回答1:

7/9x15/11-7/9x4/11
=7/9x(15/11-4/11)
=7/9x11/11
=7/9