what is the gcf of 42 and 63
what iste geatest common factor of 42 an 63
the gcf is 7(im doing this in school too)
Let's look at the factors of these numbers.
42: 1, 42, 2, 21, 3, 14, 6, 7
63: 1, 63, 3, 21, 7, 9
Which is the largest number that apears in both lists of factors?
To find the greatest common factor (GCF) of 42 and 63, you can use the following steps:
1. List the factors of both numbers: The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 63 are 1, 3, 7, 9, 21, and 63.
2. Identify the common factors: Determine which factors appear in the list of both numbers. In this case, the common factors are 1, 3, 7, and 21.
3. Determine the greatest common factor: The GCF is the largest number that divides both numbers evenly. In this example, the greatest common factor is 21.
Therefore, the greatest common factor (GCF) of 42 and 63 is 21.