 Lowest common denominator

The lowest common denominator (LCD) is the smallest multiple that two or more fractions share in their denominators. Finding the LCD is particularly useful when you're trying to add, subtract, or compare fractions, as it allows you to express all fractions with a common denominator. To determine the LCD: 1. **List the multiples:** Find multiples of each denominator. 2. **Identify the least common multiple (LCM):** Look for the smallest multiple that appears in each list.