Go backward to This is Not the Fallacy

Go up to 1=2: A Proof using Beginning Algebra

Go forward to This is Not the Fallacy

Switch to text-only version (no graphics)

Go to University of Toronto Mathematics Network Home Page

If two numbers are equal, and you subtract the same number from both of them, the differences will be equal as well.

Why don't you go back to the list of steps in the proof and see if you can identify which one is wrong, now that you know it isn't this one?

This page last updated: May 26, 1998

Original Web Site Creator / Mathematical Content Developer: Philip Spencer

Current Network Coordinator and Contact Person: Joel Chan - mathnet@math.toronto.edu