What does 1/9 + 1/3 equal

1/9 + 1/3= 4/9

they need to have the same denominator to add them so i made both denominators 9 as 9 is the lowest common multiplier . 1/9 stayed the same because its denominator was already 9 and 1/3 changed  to 3/9 beacuse to get from 3 to 9 i times by 3 so i did 1 (the numerator) times by 3 to get 3/9

answer: i think it is (1,-2)