Question

(1/x+3)-(2/3-x)=4/x²-9 怎么解

Answer 1

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