1 1/9 cannot be simplified.
1.5874
It is: 5/9+1/9 = 6/9 => 2/3 simplified
yes one-ninth
It is: 2/9+5/18 is the same as 4/18+5/18 = 9/18 which is 1/2 simplified
1/3
1/3
1/1 or 1 is simplified
1/81
1/1 can't be simplified, and is equal to ' 1 '.
it can not be simplified
-1/9 x 1/9 = -1/81