no they are spelt differently , using .999999999 in place of 1 on your tax form will result in a penalty payment , and any way you have not stated your units .
otherwise you are playing with meaningless symbols .
to paraphrase your "proofs"
x=0.999999...
10x=9.999999...
10x-x = 9.999999... - 0.999999...
9x = 9
Therefore x=1
therefore
thus x-1.0000000000 =0.0000000000000000000000000................
where x=1
or
0.999999999..... - 1 = 0.11111111111111111111111111111111 ........
where x=0.99999999999999999...............
mind you for you corporate accounts it might help with your negative proof situation ...
which is it ?????????
Edited by ikabod, : opss pressed submit by mistake