(50-x)/x=25%,这题怎么算?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/12 15:42:31

(50-x)/x=25%,这题怎么算?
(50-x)/x=25%,这题怎么算?

(50-x)/x=25%,这题怎么算?
(50-x)/x=25%
(50-x)/x=1/4
4(50-x)=x
200-4x=x
4x+x=200
5x=200
x=40
经检验x=40是方程的解

50-x=0.25x
50=1.25x
x=50/1.25=40

50-x=25℅x
50-x=0.25x
x+0.25x=50
1.25x=50
x=40

50-x=25%x 125%x=50 x=40

(50-x)/x=25%
(50-x)/x=1/4
x=200-4x
5x=200
x=40

50-x=0.25x
50=1.25x
x=50/1.25=40

50-x=(1/4)x
(5/4)x=50
x=40

400.

(50-x)/x=25%__(50-x)=0.25x__0.25x+x=50__1.25x=50__x=40 ok!

50-x=0.25x
1.25x=50
x=4
快点采纳吧。。
谢谢

(50-x)/x=25%
50-x=25%x
50=(1/4+1)x
50=5/4x
x=40