Answer:
9/12
Explanation:
To determine which fraction is not equivalent to 2/3, we can simplify each fraction and compare it to 2/3. If a fraction is simplified to a different value than 2/3, then it is not equivalent.
16/24 simplifies to 2/3, so it is equivalent to 2/3.
6/9 simplifies to 2/3, so it is equivalent to 2/3.
12/18 simplifies to 2/3, so it is equivalent to 2/3.
9/12 simplifies to 3/4, which is not equivalent to 2/3.
10/15 simplifies to 2/3, so it is equivalent to 2/3.
Therefore, the fraction that is not equivalent to 2/3 is 9/12.