Can u please help me with this thevenin problem ???

[ujnikm]

Please guys can u help me with this??
[img]http://forum.allaboutcircuits.com/cache.php?url=http://s14.postimage.org/9eysbodr5/image.png[/img]
I set all sources to 0 so we have Rth=3.667 KΩ
then using superposition and remove the current source and replace it with open circuit so we have Vth1 =-3.333 V
then remove the voltage source and replace it with short circuit so we have Vth2=25 V
so Vth=25-3.3333=21.667 V

other friends tell me that Vth2=30 V

what's the correct ??