4/9 + 5/6

To add these fractions, we need to find a common denominator. In this case, the least common multiple of 9 and 6 is 18.

So, we rewrite the fractions with a common denominator of 18:

4/9 = 8/18
5/6 = 15/18

Now, we can add the fractions:

8/18 + 15/18 = 23/18

Therefore, 4/9 + 5/6 = 23/18.

4/9 - 6/5 = 24/45 = 8/15