today we were shown a method of converting recuring decimal places to common fractions.
eg. 0.3 recuring=n=0.33333...
then 10n=3.33...
10n-n=9n
9n=3
n=3/9=1/3 (first time i've put maths into the internet so i hope you can all read the mess i just put up)
so if thats correct then for the case n=0.9 recuring...
n=0.99999...
10n=9.99999...
10n-n=9n
9n=9
n=9/9=1
0.9 recuring equal to 1????