(5⼀9+2⼀3)(5⼀9+2⼀3)×99⼀55用简算怎么算

2025-06-21 23:07:43
推荐回答(1个)
回答1:

简便计算
(5/9+2/3)x(5/9+2/3)×99/55
=11/9ⅹ11/9x9/5
=11/9ⅹ11/5
=121/45