Question

Find the gcf of 18a,20a,ang 6a
please show work

Answer 1

18a: 3*3*3*2*a

20a: 2*2*5*a

6a: 3*2*a
the greatest common factor is 2a

Answer 2

factors of 18: 1,2,3,6,9,18
factors of 20: 1,2,4,5,10,20
factors of 6: 1,2,3,6

prime factors of 18: 2,3,3,
prime factors of 20: 2,2,5
prime factors of 6: 2

gcf is 2