If you mean 12 and 18 then they are 6 and 36 respectively
The LCM is 2436.
The LCM is 1218.
The LCM of 1218 and 36 is 7308
The GCF of 1218 and 42 is 42. The GCF of 12, 18 and 42 is 6.
3
1218
If that's 1218 and 5, the LCM is 6090. If that's 12, 18 and 5, the LCM is 180.
The GCF is 6.
The GCF is 12. The LCM is 360.
The GCF is 4.
The GCF is 68, the LCM is 68
GCF is 2.LCM is 42.The GCF is 2.