It is -2 + a/9.
9/11 + 8/11 = 9+8/11 = 17/11 = 16/11
11 over 9
13/9 or 11/3
It is: 11/12 plus 4/9 = 49/36
11/9
2 over 3 plus 5 over 9 equals 11 over 9 or 1 and 2 ninths.
7/11 + 9/7 = 148/77 or 171/77
It is 11 over 15.
17/11 or 1 6/11
1/9 + 1/2 is 11/18
9/99 = 1/11 , then + 1 = 1 1/11
The sum of 1/6 and 4/9 is 11/18.