And like I said...
The equation
Quote:
x=0.9r
10x=9.9r
10xx=9.9r.9r
9x=9
x=1
x=1=0.9r

It is true
This is just a basic equaiton of equality
But ANY number for x and in the end, it will come out what x equals...if you stick 8 in, you will end up with 8...If you stick 0.4 repeating...Guess what, you'll end up with 0.4 repeating...If you stick 100.5 in , you'll end up with 100.5...........And if you stick 0.9r you'll end up with 1