no because 30x2 is 60 not 90
90 45,2 15,3,2 5,3,3,2
Since 30 is a factor of 90, all of its factors are common.
The GCF of 30 and 90 is 30.
90 45,2 15,3,2 5,3,3,2
90 45,2 15,3,2 5,3,3,2
The greatest common factor of 30, 75, and 90 is 15
The greatest common factor of 90 , 30 , 45 = 15
90 45,2 15,3,2 5,3,3,2
The GCF of 30, 90, and 120 is 30.
This is the factor tree of 270: 270 / \ 3 90 / \ 3 30 / \ 3 10 / \ 2 5 The 3's, 2, 5 would be prime so you would circle them.
30, 60/30=2, 90/30=3
Since 30 is a factor of 90, the LCM is the larger of the two numbers, ie 90.