How to find the LCM (Lowest Common Multiple) of 2 numbers in 3 simple steps

1. Find the GCF (greatest common factor) of the two numbers.

In this case, we list the factors.

28: 1, 2, 4, 7, 14, 28

49: 1, 7, 49

7 is clearly the greatest common factor.

2. Multiply the two numbers together.

After a minute of calculation, we can see that 28 x 49 is 1372.

3. Divide the product by the GCF.

The product is 1372, and the GCF is 7. 1372 divided by 7 is 196, and that’s the answer.