every number equals its reciprocal

a = 1/b
b = 1/a
c = 1/ab
1/ab = 1/(1/b)(1/a)
1/(1/b)(1/a) = 1/(1/ab)
1/(1/ab) = ab
1/ab = ab

Now, COMPLETELY disregarding the original fractions assigned to A and B, let's begin anew:

a = 2
b = 2

1/2(2) = 2(2)

1/4 = 4
 

it's the maths between line 7 and 8 that is just fucked. When you divide one by a reciprocal, you end up with the reciprocal, so if he had done this proof correctly, even with defining a, b, and c as they are, it is still ab=ab. I think this guy is just a dipstick troll. let this one die, guys. sage.