作业帮[17/25-(2/5+3/20]×2/13
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/17 11:29:00
![[17/25-(2/5+3/20]×2/13](/uploads/image/z/378753-33-3.jpg?t=%5B17%2F25-%282%2F5%2B3%2F20%5D%C3%972%2F13)
x)647207672=
[17/25-(2/5+3/20]×2/13
[17/25-(2/5+3/20]×2/13
[17/25-(2/5+3/20]×2/13
[17/25-(2/5+3/20)]X2/13
=[17/25-11/20]X2/13
=13/100X2/13
=1/50