(1/x+3)-(2/3-x)=4/x²-9 怎么解

问题描述:

(1/x+3)-(2/3-x)=4/x²-9 怎么解

1/(x+3)+2/(x-3)=4/(x+3)(x-3)
两边乘(x+3)(x-3)
x-3+2x+6=4
3x=1
x=1/3
经检验,x=1/3是方程的解