Thank you! Do you have any feedback for improvements? Also how far did you get!
I stuck on the part with the 2x-2y=??? I don't know what to do there is a number 4 on the wall but what must I do
If you walk up to the bookcase you can insert a keycode, 2x-2y is part of the keycode, the bookcase will tell you what one of the variables is but not the other, HINT: the "neighbour" is uncle joe :-)
