7%x+10%(80-x)=6.5

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 13:27:25
7%x+10%(80-x)=6.57%x+10%(80-x)=6.57%x+10%(80-x)=6.57%x+10%(80-x)=6.50.07x+8-0.1x=6.50.1x-0.07x=8-6.5

7%x+10%(80-x)=6.5
7%x+10%(80-x)=6.5

7%x+10%(80-x)=6.5
7%x+10%(80-x)=6.5
0.07x+8-0.1x=6.5
0.1x-0.07x=8-6.5
0.03x=1.5
x=1.5÷0.03
x=50

不懂可追问,有帮助请采纳,谢谢!

原式=7%X+8-10%X=6.5
3%X=1.5
X=50