Question

Enter the sum of the numbers as a product of their GCF and another sum

15 + 40

The sum of the numbers as a product of their GCF is ___ x (__ + ___)

Answer 1

The GCF (Greatest Common Factor) is the biggest factor common to both of these numbers, so we must determine the factors for each:

15--->1,15

3,5

20--->1,20

2,10

4,5

As we can see, 1 and 5 are the common factors and 5 is the biggest (greatest). Therefore, we can "pull" out a 5 from both numbers and get a resulting equation of:

15 + 20--->5(3 + 4)

Hope this helps!

Explanation: