Divide the numerator of the fraction by the denominator. As an example, assume an improper fraction of 17/3. So 17 divided by 3 is 5 with a remainder of 2.
Substitute the remainder of the result from Step 1 for the numerator of the original fraction. In the example, the substitution yields a new fraction of 2/3.
Place the new fraction from Step 2 to the right of the whole number result of the division from Step 1 to get the mixed-numeral equivalent of your improper fraction. In the example, the mixed numeral equivalent of 17/3 would be be 5 2/3.