How to Factor - 6x-18y

-6 (x + 3y)

Step-by-step explanation:

You can't factor out any variables in this case so you should look towards factoring out a number

To fully factor, you find the greatest common factor between terms and extract that, placing it on the outside of the parenthesis.

So you rewrite - 18y as - 6 times 3y and rewrite - 6x as - 6 times x.

Answer: 108