15 and 18
6 and 90
15 and 90
The set of (90,90) has a GCF and an LCM of 90.The set of (-90,-90) has a GCF and an LCM of 90.
40 and 50
40 and 50
45 and 10
The GCM is infinite.The GCF is 15.The LCM is 450.Check it.75 x 90 = 6750450 x 15 = 6750It checks.
45 and 10
The GCF is 15. The LCM is 990.
The LCM is 90. The GCF is 9.
The GCF is: 15The LCM is: 990
In these types of problems, the numbers can also be the answer. 3 and 30 have a GCF of 3 and an LCM of 30. Since the product of the GCF and LCM of two numbers is the same as the product of the numbers, you could also use another factor pair of 90, like 6 and 15.