I need to solve:

1) (2x-y+5)*dy/dx + x -2y +3=0

here, I made the derivative the subject then substituted to get rid of the constants... in the end I got

(x+y+2)^3 = (y-x-8/3)/(k^2) where lnk= C (constant of integration)

Is this right? a friend got (x-y+8/3)*k^2 on the right-hand side

any help is much appreciated