Question

（0.1- x）/（0.1-x）=4怎么解?

Answer 1

朋友,你这道题目是写错 了吧,没有解啊.

原题目是不是下面这样?

(0.1+x)/(0.1-x) = 4

或：(0.1-x)/(0.1+x) = 4

(0.1+x)/(0.1-x) = 4

(0.1+x) = 4(0.1-x)

0.1+x = 0.4-4x

5x = 0.3

x = 0.06

或：(0.1-x)/(0.1+x) = 4

(0.1-x) = 4(0.1+x)

0.1-x = 0.4+4x

-5x = 0.3

x = -0.06