Mathematical Proof That  2 = 1
Searching for a math impossibility

Try this one out - see if you can find the hole here!
(Don’t scroll down until you’ve given it a good shot ...)

Initial supposition    x = y
Multiply both sides by x:     xx = xy
Subtract y squared from both sides:     xx - yy = xy - yy
Factor both sides:     (x + y)(x - y) = y(x - y)
Divide both sides by (x - y):     x + y = y
Substitute y for x, based on initial supposition:     y + y = y
Replace y with any number (eg. 1):     1 + 1 = 1 or 2 = 1

Scroll down to see the ‘flaw’ ...

The step that divides through by (x - y) is effectively dividing by zero, based on the initial supposition. That invalidates the subsequent results. Calling In Sick - Snow Job for the Boss Look At It This Way Camouflaged Owls Snow Geese Quantum Physiques Typewriter Parts Irish Flu Shots Hawaii Scuba Bus Winter Blues Pink Freud Geriatric Flight Chili Rub Safety Pin Face New York's Morning Cup of Java Pole Position Before Political Correctness Tooth Loss Organic Compromise Classic Ballet Ad Redneck Air Conditioning Controls      