Apply the distributive property to factor out the greatest common factor of all three terms.

9-12x+6y

The greatest common factor is 3.

Step-by-step explanation:

If you decompose 9 you will get 3*3 so 9=3*3

If you decompose 12 you will get 2*6, then you can decompose 6 which 2*3 so 12=2*2*3

If you decompose 6 you will get 2*3 so 6=2*3

What do all of these numbers have in common? The 3.

So 3 is the greatest common factor. Now you just put the 3 in front and then open the bracket and divide each of the number by 3.

9/3=3

-12x/3=4x

6y/3=2y

So, this will be your answer 3 (3-4x+2y)

3 (3-4x+2y) i hope thus was just daftoring