1 = 2

Start                                       Let  X=Y

Multiply by Y                       XY = YY

Subtract X²                           XY – XX = YY – XX

Factorise                               X(Y – X) = (Y+X)(Y-X)

Divide by (Y-X)                    X = Y+X

X= X+X

X = 2X

1 = 2     !!!