来自葛利的问题
123乘456除789除456乘789除123用简便
123乘456除789除456乘789除123用简便
3回答
2020-03-24 15:43
123乘456除789除456乘789除123用简便
123乘456除789除456乘789除123用简便
你好!
123×456÷789÷456×789÷123
=123÷123×456÷456×789÷789
=1
太谢谢了
助人为乐