After i read 1984, i did this little equation based on another simple equation my dad showed me. It has the same trick, but if you haven't seen it before, it mught catch you by surprise
2+2=5
1. let -> x = 2 + 2
2. x(x-1) = (2+2)(x-1) (multiply by x-1)
3. x^2 -x = 2x + 2x - 2 - 2
4. x^2 - 4x = x - 4 (subtract 3x)
5. (x-5)(x^2-4x) = (x-5)(x-4) (multiply by x-5)
6. x^3 - 9x^2 + 20x = x^2 - 9x + 20
7. x(x-4)(x-5) = (x-4)(x-5) (factor)
8. x^2 - 5x = x - 5 (divide by x-4)
9. x^2 - x = 5x - 5 (add 4x)
9. x(x-1) = 5(x-1) (factor)
10. x = 5 (divide by x-1)
so 2+2=5
and all else follows.....