Looking Back to your Lesson From your previous lessons, you have learned on how to write fraction using shaded parts and compare two quantities by making an illustration for the given ratio. You also learned on how to simplify fraction to lowest terms. To reduce fraction to its simplest form, divide the numerator and denominator to its Greatest Common Factor (GCF). 4 4 1 Example: The GCF of 4 and 12 is 4. Divide the numerator and denominator by 4. 12 12 4 3 4 18 Simplify the following fractions. 5 9 2. 15 24 20 5. 25 4. 3. 1. - 18 36​