the full form of LCM is Least Common Multiple The smallest nonzero number that is a multiple of two or more numbers. Least Common Multiple of a group of number is the smallest number that is multiple of all numbers.there were different ways to find LCM
1. Use prime factorization of given numbers.
2. Write down the most times any prime number occurs in the prime factorization of each number.
3. multiply all prime factor together
4. then u get ur LCM