Q:

What is the LCM of 142 and 110?

Accepted Solution

A:
Solution: The LCM of 142 and 110 is 7810 Methods How to find the LCM of 142 and 110 using Prime Factorization One way to find the LCM of 142 and 110 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 142? What are the Factors of 110? Here is the prime factorization of 142: 2 1 × 7 1 1 2^1 × 71^1 2 1 × 7 1 1 And this is the prime factorization of 110: 2 1 × 5 1 × 1 1 1 2^1 × 5^1 × 11^1 2 1 × 5 1 × 1 1 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: 2, 71, 5, 11 2 1 × 5 1 × 1 1 1 × 7 1 1 = 7810 2^1 × 5^1 × 11^1 × 71^1 = 7810 2 1 × 5 1 × 1 1 1 × 7 1 1 = 7810 Through this we see that the LCM of 142 and 110 is 7810. How to Find the LCM of 142 and 110 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 142 and 110 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, 142 and 110: What are the Multiples of 142? What are the Multiples of 110? Let’s take a look at the first 10 multiples for each of these numbers, 142 and 110: First 10 Multiples of 142: 142, 284, 426, 568, 710, 852, 994, 1136, 1278, 1420 First 10 Multiples of 110: 110, 220, 330, 440, 550, 660, 770, 880, 990, 1100 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 142 and 110 are 7810, 15620, 23430. Because 7810 is the smallest, it is the least common multiple. The LCM of 142 and 110 is 7810. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 119 and 106? What is the LCM of 45 and 139? What is the LCM of 91 and 107? What is the LCM of 76 and 77? What is the LCM of 115 and 149?