“12345679乘12345677/12345678”是多少?

分类: 作业答案 • 2022-06-23 12:54:59

问题描述：

答

12345679乘12345677/12345678
=(12345678+1)(12345678-1)/12345678
=12345678-1/12345678

答

(12345678+1)*12345677/12345678
=12345677+12345677/12345678