# Chapter 3 - Adding and Subtracting Fractions - 3.2 Least Common Multiples - 3.2 Exercises: 13

100

#### Work Step by Step

Multiples of 50: 50, 100, 150 In order to find the LCM of 20 and 50, we must find the first multiple of 50 that is also divisible by 20. 50 is not divisible by 20. $100\div20=5$ Therefore, 100 is the LCM of 20 and 50.

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