23.24/2.8-7.5*0.8 怎么简算_数学解答

23.24/2.8-7.5*0.8 怎么简算

人气：300 ℃　时间：2020-03-21 22:32:11

解答

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