1/(4/5x-1/5)=3怎么解

问题描述:

1/(4/5x-1/5)=3怎么解

4/5x-1/5=1/3
4/5x = 1/3+1/5
x = 8/15*5/4
= 2/3

4/5x-1/5=1/3
4/5x=8/15
x=2/3

(4/5x-1/5)=1/3
4/5x=1/3+1/5=8/15
1/x=2/3
x=3/2

3/2

1/(4/5x-1/5)=3
1=3(4/5x-1/5)
1=12/5x-3/5 两边乘5
5=12x-3
12x=5+3
12x=8
x=2/3