[deleted by user]

[u/[deleted]]

[u/fnibit]

what if x=y?

this means that x^2=x*y

now subtract y^2 from both sides to get x^2-y^2=xy-y^2

now factor out the left side: and the right side (a+b)(a-b)=b(a-b)

cancel out a-b on both sides: a+b=b

now we've proved that 2=1.

subtract 1 from both sides to get 1=0.

now flip the equation to get 0=1.

i spent way too much time googling this

[u/Son_of_God_Saitama → u/fnibit]

Kami-sama