(7225-104乘15)/55简便方法怎么做

分类: 作业答案 • 2021-12-31 13:27:35

问题描述：

答

(7225-104X15)/55
=(7225/5-104X15/5)/11
=(1445-104X3)/11
=(1445-312)/11
=1133/11
=103