求方程如何解:x/14%+(5-x)/12%=40
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 19:21:15
![求方程如何解:x/14%+(5-x)/12%=40](/uploads/image/z/557820-36-0.jpg?t=%E6%B1%82%E6%96%B9%E7%A8%8B%E5%A6%82%E4%BD%95%E8%A7%A3%EF%BC%9Ax%2F14%25%2B%285-x%29%2F12%25%3D40)
求方程如何解:x/14%+(5-x)/12%=40
求方程如何解:x/14%+(5-x)/12%=40
求方程如何解:x/14%+(5-x)/12%=40
把14%和12%看成0.14和0.12,接下来就好解了:
X/0.14+(5-X)/0.12=40
100X/14+(500-100X)12=40
600X+7(500-100X)=3360
600X+3500-700X=3360
-100X=-140
X=1.4
自己算的,给分啊