Question

find the greatest common factor of 15n and 9b³.

Explanation:

Step1: Prime - factorize the coefficients

Prime - factorize 15 and 9.
$15 = 3\times5$
$9=3\times3$

Step2: Determine GCF of coefficients

The common factor of 15 and 9 is 3.

Step3: Consider variables

For the variables, there are no common variables between $n$ and $b^{3}$ (since they are different variables).

Answer:

3