The lcm is the “lowest common denominator” (lcd) that can be used before adding, subtracting, or comparing fractions. The lcm of more than two integers is well defined as well: it is the smallest positive integer that is divisible by each of them.

To break things down into smaller sections. To distribute any number of sets of items equally into their largest grouping. To determine how many people we can invite. To group or arrange something into rows or groups.