An Inconvenient Truth

Given x = 1 and y = 1, then

x = y

Multiplying each side by x,

x² = xy

Subtracting y² from each side,

x² - y² = xy - y²

Factoring each side,

(x + y)(x - y) = y(x - y)

Dividing out the common term, (x - y) results in

x + y = y

Substituting the values of x and y,

1 + 1 = 1

or

2 = 1

"Q.E.D."

This will keep me awake tonight

Well there goes years of studying math.

x-y = 0

You are not allowed to divide by 0.

yeah, it was very remarked

(but you are a spoiler)

dividing by zero is not allowed, and (x-y)=0.

-2 = -2
4 - 6 = 1 - 3
4 - 6 + 9/4 = 1 - 3 + 9/4
(2 - 3/2)² = (1 - 3/2)²
2 - 3/2 = 1 - 3/2
2 = 1

Q.E.D

If you build it, they will come point out what is wrong with it and therefore how much smarter they are than you.

Division by zero does not produce "infinity". Infinity is not reached by calculation.

1+1 =2  or a window if drawn only when multiplying 1 x 1 = 1  ?

                 According to THAT logic,  I don't exist!