85/4+15/4 321*654/987/654*987/321 简便计算要过程._数学解答

85/4+15/4 321*654/987/654*987/321 简便计算要过程.

人气：154 ℃　时间：2020-04-04 05:48:44

解答

85/4+15/4
=（85+15）/4
=100/4
=25
321*654/987/654*987/321
=321/321*654/654*987/987
=1