Q:

What is the LCM of 93 and 105?

Accepted Solution

A:
Solution: The LCM of 93 and 105 is 3255 Methods How to find the LCM of 93 and 105 using Prime Factorization One way to find the LCM of 93 and 105 is to start by comparing the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here: What are the Factors of 93? What are the Factors of 105? Here is the prime factorization of 93: 3 1 × 3 1 1 3^1 × 31^1 3 1 × 3 1 1 And this is the prime factorization of 105: 3 1 × 5 1 × 7 1 3^1 × 5^1 × 7^1 3 1 × 5 1 × 7 1 When you compare the prime factorization of these two numbers, you want to look for the highest power that each prime factor is raised to. In this case, there are these prime factors to consider: 3, 31, 5, 7 3 1 × 5 1 × 7 1 × 3 1 1 = 3255 3^1 × 5^1 × 7^1 × 31^1 = 3255 3 1 × 5 1 × 7 1 × 3 1 1 = 3255 Through this we see that the LCM of 93 and 105 is 3255. How to Find the LCM of 93 and 105 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 93 and 105 is to begin to list a few multiples for each number. If you need a refresher on how to find the multiples of these numbers, you can see the walkthroughs in the links below for each number. Let’s take a look at the multiples for each of these numbers, 93 and 105: What are the Multiples of 93? What are the Multiples of 105? Let’s take a look at the first 10 multiples for each of these numbers, 93 and 105: First 10 Multiples of 93: 93, 186, 279, 372, 465, 558, 651, 744, 837, 930 First 10 Multiples of 105: 105, 210, 315, 420, 525, 630, 735, 840, 945, 1050 You can continue to list out the multiples of these numbers as long as needed to find a match. Once you do find a match, or several matches, the smallest of these matches would be the Least Common Multiple. For instance, the first matching multiple(s) of 93 and 105 are 3255, 6510, 9765. Because 3255 is the smallest, it is the least common multiple. The LCM of 93 and 105 is 3255. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 75 and 54? What is the LCM of 32 and 11? What is the LCM of 43 and 113? What is the LCM of 46 and 89? What is the LCM of 39 and 139?