I have no idea what to do on level 6. I've tried everything, I swear. Of course, the one puzzle I can't figure out also happens to be the one without hints. Can I please have help? I've tried
36=9x4, but you need the 4 to make 5+4=9 or the 3 to make 3x3=9.
3x6=9x2, but you need two of a number for the = in the middle.
3+6=9, but that wastes the plus and a 3, meaning you can't do 5+4=9 or 3x3=9
4x6=9+25, but that leaves an extra x when doing the 2x3=6 and 3=3
My next best guess is that it's going for variables with the amount of x's there are or something crazy like that, but I seriously can't think of a 'normal' solution for this.