Factor them.
5 x 7 = 35
2 x 3 x 3 x 5 = 90
Combine the factors, eliminating duplicates.
2 x 3 x 3 x 5 x 7 = 630, the LCM
Least Common Multiple (LCM) for 35 54 90 is 1,890.
The least common multiple of the numbers 35, 65 and 90 is 8,190.
630
The LCM is 7560.
The LCM is 140.
5 and 630, respectively.
You need at least two numbers to find an LCM. If that's 7 and 35, the LCM is 35.
LCM(90,84) = 1260
You need at least two numbers to find an LCM.
You need at least two numbers to find an LCM.
You need at least two numbers to find an LCM.
The LCM is 35.