Q. What is the least common denominator of 103 and 21 ?_____
Identify Denominators: Identify the denominators of each fraction. Denominators are 10 for 103 and 2 for 21.
Find LCM: Find the least common multiple (LCM) of the denominators.List multiples of 10: 10,20,30,40,…List multiples of 2: 2,4,6,8,10,12,14,16,18,20,…The smallest common multiple is 10.