Compare the following fractions using (>,<,=)?

The answer is: <.

In mathematics, comparing and ordering fractions is a vital skill. Fractions are compared using symbols>, or =. For example, 11/21 < 2/3. This is because the numerator of 11/21 is smaller than the numerator of 2/3, so 11/21 is a smaller fraction. Additionally, we can simplify 11/21 to 5/10, which is also less than 2/3. So, 11/21 < 2/3.