what is the gcf of 90 and 75

Factors of 75 =

3, 25, 5, 15

Which of those is also a factor of 90?

15

To find the greatest common factor (GCF) of 90 and 75, you can start by listing the factors of both numbers and identifying the greatest factor they have in common.

To find the factors of 90, you can begin by listing the numbers that divide 90 evenly:
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Next, find the factors of 75:
1, 3, 5, 15, 25, 75

Now, compare the two lists and look for the largest number that appears in both lists. In this case, the greatest common factor of 90 and 75 is 15.

So, the GCF of 90 and 75 is 15.