Question

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3-2: Practice & Problem Solving week of 2/27
Find the least common multiple (LCM) for the pair of numbers.
45,7
The LCM of 45 and 7 is

Answer 1

315 i know bc i took the test

Answer 2

315

Explanation:

The LCM for 45 and 7 is 315

One way to find the LCM of 7 and 45 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 7?What are the Factors of 45?

Here is the prime factorization of 7:

7171

And this is the prime factorization of 45:

32×5132×51

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: 7, 3, 5