I hated algebra in high school, so if I'm using it now, I don't know it But any faith I had in algebra was shattered one day many years ago while watching a local college professor on public TV running thru a series of equations on a whiteboard, and when he was done, he stood back and said "... so the answer is zero..." then paused, looked at the board a sec, then said ".. or minus two"...

I swear, that's what he said. That doesn't work for me...