In honor of the absolutely atrocious mathematics of World of Warcraft players as recently showcased in this thread here http://www.mmo-champion.com/threads/899641-6÷2(1-2), I decided to cause some more mischief and see if people can figure out how I proved 2 is equal to 1 (and where my intentional error is)

Given: a = b:

a^2 = ab

a^2 - b^2 = ab - b^2

(a + b)(a - b) = b(a - b)

(a + b) = b

a + a = a

2a = a

2 = 1

P.S. the ^ is to indicate power its raised to. 4^2 = 16 (4 squared = 16).