(1+1/2+1/3+1/40)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4),不好意思,是下面这个!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 00:38:09
![(1+1/2+1/3+1/40)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4),不好意思,是下面这个!](/uploads/image/z/15180779-11-9.jpg?t=%281%2B1%2F2%2B1%2F3%2B1%2F40%29%2A%281%2F2%2B1%2F3%2B1%2F4%2B1%2F5%29-%281%2B1%2F2%2B1%2F3%2B1%2F4%2B1%2F5%29%2A%281%2F2%2B1%2F3%2B1%2F4%29%281%2B1%2F2%2B1%2F3%2B1%2F4%29%2A%281%2F2%2B1%2F3%2B1%2F4%2B1%2F5%29-%281%2B1%2F2%2B1%2F3%2B1%2F4%2B1%2F5%29%2A%281%2F2%2B1%2F3%2B1%2F4%29%2C%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%2C%E6%98%AF%E4%B8%8B%E9%9D%A2%E8%BF%99%E4%B8%AA%21)
(1+1/2+1/3+1/40)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4),不好意思,是下面这个!
(1+1/2+1/3+1/40)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)
(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4),不好意思,是下面这个!
(1+1/2+1/3+1/40)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4),不好意思,是下面这个!
答案:1/5.令1/3+1/4+1/5=x.得出(1+x)-(1+x+1/5)x.打开括号一减.最后得出1/5.本来想回答详细点的.但是手机打那些字很麻烦.