The equation 1 = 2
From Scratchpad
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a - b)(a + b) = b(a - b)
(a - b)(a + b) = b(a - b)
(a + b) = b
but a = b
therefore:
a + a = a
2a = a
hence
2 = 1
there is a calculus version of the equation which may be done later.
