Write a real-world problem in which it would be to find the least common multiple.

If you go to a shop to get some sweets, and some drinks. Your mother says to get the smallest amount of food you can get, but the amount of drinks have to be the same as the amount of sweets. The sweets come in packs of 6 and the drinks come in packs of 3.
You will need the lowest common multiple to find out how many drinks and sweets you will need.

N- 3 is the answer