(7225-104乘15)/55简便方法怎么做_其他解答

(7225-104乘15)/55简便方法怎么做

人气：250 ℃　时间：2020-02-03 09:13:17

解答

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