You can put this solution on YOUR website! See this --> http://library.thinkquest.org/2647/algebra/post.htm
Then substitute in 'numbers' or other combinations of letters to create examples.
For instance:
Transitive Property of Equality: if a = b and b = c, then a = c
example If 12 = (9+3) and (9+3) = (13-1) then 12 = (13-1) OR
if x = y and y = 2z then x = 2z