How do you find the greatest common multiple?

Answer 1

The greatest common multiple of any set of numbers is infinite. There really is no way that you can find the greatest common multiple because numbers never stop so there is really no way that you can solve that. This is the way of math.
The greatest common multiple of any set of integers is infinite. No one ever finds it.

Answer 2

You can relax and quit worrying about it. There is

no such thing as the 'greatest' common multiple,

so you'll never have to do one.

You should start listening better in class, though.