Comment Re:9.999... -- 0.999... = 9 ? (Score 1) 1260
It depends on the infinity you're talking about. You can use something like mathematical induction to demonstrate 9.999... -
9 - 0. = 9
9.9 -
9.99 -
9.999 -
etc. Is there any finite number of 9s you can tack on to make this not true? No- and there's no reason an infinite number of them will make any difference to it.
9.99999...
-0.99999...
=9.000000...
Or,
9 + (
Algebraically rearranged- you CAN do this:
9 + (.9 -