Algebra

William is the smartest man alive.  We went out to chalk on the walk and he asked me to give him some math problems.  I kept making them harder and he kept getting them.  So I moved on to algebra.  Here are a couple of Wm's solutions....

3-x=-2  x=5

-4+x=2  x=6

(I realize one isn't oriented right, but I don't feel like rotating it. It's Monday.  Cut me some slack.)

As if to prove his sense of humor hasn't matured as quickly as his math skills, he popped up after the last picture and yelled, "I FARTED RIGHT AS YOU TOOK THAT PICTURE!  HAHAHAHA!"