(2.5-x)/x=0.4怎么算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/29 20:56:53
(2.5-x)/x=0.4怎么算(2.5-x)/x=0.4怎么算(2.5-x)/x=0.4怎么算2.5-x=0.4x1.4x=2.5x=25/142.5-x=0.4x2.5=x+0.4xx=2.5/1

(2.5-x)/x=0.4怎么算
(2.5-x)/x=0.4怎么算

(2.5-x)/x=0.4怎么算
2.5-x=0.4x
1.4x=2.5
x=25/14

2.5-x = 0.4x
2.5=x+0.4x
x=2.5/1.4

交换相乘得2.5-x=0.4x
移项得1.4x=2.5
结果x=25/14

2.5-x=0.4x
1.4x=2.5
x=25/14

x 乘到右边,得2.5-x = 0.4x
两边同时加上x ,得 2.5=1.4x
两边同除1.4,得x=1.79