0.999....=1

[Teeqoz]

Davman said:

Nope you don't know basic mathematics.
10x=9.999...
x = 9,999.../10
End of story.

You cannot add x during solving by yourself.

I'm not adding x. 9.999 repeating is the same as 9 + 0.999... repeating, so 9.999.... is the same as 9 + x

So that does not disprove the proof (alternatively, you could use the other proof either way, since I provided two).