Yes, 1 + 1 = 1 demonstrates the concept of mathematical fallacy. Division by (a - b) is undefined, which makes 1 + 1 = 1 invalid. :) But that's what interesting

Yes, 1 + 1 = 1 demonstrates the concept of mathematical fallacy. Division by (a - b) is undefined, which makes 1 + 1 = 1 invalid. :) But that's what interesting IMO, it all depends on the angle of looking at the equation. It might be invalid and mean nothing, or be valid and mean everything.