(378584-123)/(583387+264)

分类: 作业答案 • 2022-04-05 20:57:26

问题描述：

(378*584-123)/(583*387+264)

答

(387*584-123)/(583*387+264)
=[387*(583+1)-123]/(583*387+264)
=(387*583+387-123)/(583*387+264)
=(583*387+264)/(583*387+264)
=1

(378*584-123)/(583*387+264)