Hello! For the least common multiple we will have to find factors of these numbers
For example:
5 = 1, 5, 10, 15, 20, 25, 30, 35, 45, 50, 55, 60, 65, 70, 75, 80
6 = 1, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90
7 = 1, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98
Sometimes we can keep on going forever but we can just multiply them out as well!
5 * 6 * 7 = 30 * 7 = 210
Least common multiple will be 210! :)