1 = 2

1 = 2

Assuming:

a = b

Then:

a * a = a * b

a^2 = ab

a^2 + a^2 = ab + a^2

2a^2 = ab + a^2

2a^2 - 2ab = ab + a^2 - 2ab

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

2(a^2 - ab) = 1(a^2 - ab)

2 = 1