987654321×12345-987654322×12344

分类: 作业答案 • 2022-01-09 18:03:09

问题描述：

答

987654321×12345-987654322×12344
=987654321×12345-987654321×12344-12344
=987654321x(12345-12344)-12344
=987654321-12344
=987652977