1a Find the greatest common factor (GCF) of 6 and 9

1b Use the greatest common factor (GCF) you found in 1a

to simplify the expression 6b - 9k

the GCF is 3 so 2b - 3k

1a) the GCF of 6 and 9 is 3.

1b) - 9

Step-by-step explanation:

1a) The greatest commons factor is the greatest number that divides two numbers. 3 is the largest number that goes into both 9 and 6 evenly. Therefore, 3 is the GCF.

1b) 6*3=18 and 9*3=27

18-27=-9