03-10-2009, 08:01 AM
Krystal Wrote:Allyson's point just makes more sense to me, and I hate math. .9999~ approaches one, but can never be one, unless you round up. If you subtract x on one side and .9999~ on the other, aren't you saying that x=.9999~ instead of 1? If so, doesn't this equation contradict itself?
Quote:x = 0.9999...
10x = 9.9999...
10x - x = 9.9999... - 0.9999...
9x = 9
x = 1.
lets do it a little differently:
x = 0.999....
10x = 9.999...
equation 2 - equation 1
.....(10x = 9.999...)
...- ( 1x = 0.999...)
........9x = 9
..........x = 1