The prime factorization is 11 x 5, so the factor tree is simple: 55 11 x 5
Since 45 is a factor of 270, it is automatically the GCF.
1936 /\ 44 45 /\ /\ 22 15 /\ /\ 1 1 12
3 is a common factor of 57and 45.
because 9 times 5 = 45
45 15,3 5,3,3
45 15,3 5,3,3
Because 45 is not a factor of 60.
45 15,3 5,3,3
45 15,3 5,3,3
Use a factor tree. 45 15,3 5,3,3
45 15,3 5,3,3
45 doesn't divide into 60 evenly.
15,3 3,5,3
Because 45 is not a factor of 60.
45 doesn't divide into 60 evenly.
Use a factor tree. 45 15,3 5,3,3