1/(4/5x-1/5)=3怎么解
问题描述:
1/(4/5x-1/5)=3怎么解
答
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