Greatest common factor of 8a and 18a
8a = 2 2 2 a18a = 2 3 3 a2 and a are common factors, therefore the GCM of 8a and 18a is 2a.
ignore the a and add it at the end, because we know that both 8a and 18a are divisible by afactors of 8:1842factors of 18:1182936the highest number that both of them have in common is 2, so the GCF of 8a and 18a is 2a