What is the least fraction that must be added to (1 1/3 + 1 1/2) + 1 1/9 to make the result a natural number?
The expression (1 1/3 + 1 1/2) + 1 1/9 equals 5.
To make the result a natural number, we need to add the smallest fraction possible. In this case, adding 1/9 is sufficient to make the result a natural number (6).
Therefore, the least fraction that must be added to make the result a natural number is 1/9.