6/9+4/9 = 10/9.

6/9 + 4/9 = (?)

6/9 + 4/9 = (6 + 4)/9

= 10/9

6/9 + 4/9 = 10/9

6/9 is a fraction as an addend,

4/9 is a fraction as an addend,

10/9 is the sum of 6/9 and 4/9.

6/9 + 4/9 = 10/9

10/9 = 1.1111

6/9+4/9 as a decimal is 1.1111

1.1111 is the sum of 6/9 and 4/9.