LCM( 7, 11 ) = 77
Step 1: Write down factorisation of each number:
7 = 7
11 = 11
Step 2 : Match primes vertically:
7 | = | 7 | ||
11 | = | 11 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
7 | = | 7 | ||||
11 | = | 11 | ||||
LCM | = | 7 | · | 11 | = | 77 |
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.