Решите: x-7/x+3=x-3/x+9

Question

Решите: x-7/x+3=x-3/x+9

Answer 1

x-7/x+3=x-3/x+9

(х-7)*(х+9)=(х+3)*(х-3)

х^2+9x-7x-63=x^2-3x+3x-9

2х-56=0

2х=56

х=28