Answer: 5/9
Step-by-step explanation:
Find the lowest common denominator (LCD).
Here, the answer is 9, because our denominators are 3 and 9. 3x3 = 9, therefore 9 is the lowest. We can't use 3 because we can't get the denominator with 9 to simplify down to 3.
1/3 = 3/9.
3/9 + 2/9 = 5/9
We can't simplify, since we can't divide by 2 or 3, so 5/9 is our final answer.
