You most likely right about the line 3 deal. x isn't really x, it's .9r. He/She is actually
subtracting 10x - .9r, which is definitaly not 9x. It's a hoax... or whatever... Probably just trying to get you guys to think...
If this somehow did workout (it doesn't, just hypothetical) you're teacher would be immediately awarded
a position at Fine Hall at Princeton to figure out how to fix Math. :P
So goto school Monday and tell you're teacher that you're not as stupid as you look!
