It is -2 + a/9.
1 and 8/9
1/2 + 1/9 = 9/18 + 2/18 = 11/18
2 over 3 plus 5 over 9 equals 11 over 9 or 1 and 2 ninths.
1/3 = 3/9 + 2/9 = 5/9
7/9
6 over 9 plus 1 over 2 can be represented mathematically as 6/9+1/2 whose answer is 1.17.
The sum of 7/9 and 1/2 is 1 5/18
6/9 + 4/9 = 10/9 = 1 and 1/9
reduced= 1 whole number and 1 over 9improper=10 over 9
2 5 ths
1/3 + 3/9 = 2/3