Question

x:(2x一1)=4:5？

Answer 1

根据题目，有：
x / (2x+1) = 4/5
将等式两边都乘以 2x + 1，得到：
x = (4/5)(2x+1)
接下来，我们可以将右侧的分数转化成除法形式，计算如下：
x = (4/5)(2x+1)
x = (4/5) * 2x + (4/5) * 1
x = (8/5)x + (4/5)
将等式移项，得到：
x - (8/5)x = (4/5)
(5/5)x - (8/5)x = (4/5)
(-3/5)x = (4/5)
x = (4/5) ÷ (-3/5)
x = -4/3
因此，根据题目，x 的值为 -4/3。