17/5×18-17/5等于多少,算是 日期:2021-07-23 13:00:23 人气:1 17/5×18-17/5等于多少,算是 17/5×18-17/5 =17/5×18-17/5×1 =17/5×(18-1) =17/5×17 =57.8