Convert the mixed number into an improper fraction.

The *numerator* is the whole number multiplied with the denominator plus the numerator of the mixed number. The *denominator* remains unchanged.

If you would like to have a vivid explanation with a detailed example, please read the page Mixed Numbers to Improper Fractions

**Step 1: Calculate the numerator**

Calculate the *numerator* by multiplying the whole number (4) with the denominator (13) and adding the numerator (12):

4 × 13 + 12 = 64

Numerator: **64**

**Step 2: Calculate the numerator**

The *denominator* remains the same:

Denominator: **13**