23.24/2.8-7.5*0.8 怎么简算

分类: 作业答案 • 2021-12-19 11:35:08

问题描述：

答

23.24/2.8-7.5*0.8
=23.24/4/0.7-2.5*3*4*0.2
=5.81/0.7-(2.5*4)*(3*0.2)
=8.3-10*0.6
=8.3-6
=2.3