Here is a proof why 1 is equal to 2:

x = y

x * x = y * x

x^2 - y^2 = xy - y^2

(x+y)(x-y) = x-y(y)

x+y = y

y + y = y (remember, x = y)

y = 1; means 2 = 1

Is this right or wrong? If wrong, what step is wrong? For example, if you thought multiplying by x in the beginning was wrong, your answer would be 2.

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