6.9999999 = 7????

Hi again, here's something that should leave your mind boggling; I'll prove that 6.99999999999_ (9's to infinity) = 7

It's simple: let x = 6.999999999999999_

Now 10*x = 69.999999999999999_

and 10x - x = 63 or 9x = 63

and x = 63/9 = 7 ! (not factorial)

Math is weird sometimes...