7 is prime, and 55 is the product of the primes 5 and 11. There are therefore no common factors, so the greatest common factor of 55 and 7 is 1.
So, the LCM of 55 and 7 is 55*7=385.
The LCM of 7, 55, and 77 is 385385
The LCM is 55.
Prime factors of 55 are: 5 and 11 Prime factors of 70 are: 2, 5 and 7 LCM is: 2*5*7*11 = 770
The LCM is 55.
The LCM is 55.
The LCM is 990.
The LCM is 1375.
The LCM is: 770
The LCM is 1155.
The LCM is 4620.
The LCM of 55 and 99 is 495.
The LCM of 12 and 55 is 660.