What is the greatest common factored of 5x+15

5

Step-by-step explanation:

5x+15

So let's take them one after the other

5x=1,5, x

15=1,3,5,15

Since 5 is common to the two, So the greatest common factor will be 5

But we can solve further in case we are asked to factorise

5x+15

5 (x+3)

So the answer for factorisation is 5 (x+3)