LCM( 6, 3, 7, 9 ) = 126
Step 1 : Place the numbers inside division bar:
6 | 3 | 7 | 9 |
Step 2 : Find a prime number which can divide at least two of your numbers.
In this example we can divide by 3. If any number is not divisible by 3 write it down unchanged.
3 | 6 | 3 | 7 | 9 |
2 | 1 | 7 | 3 |
Step 4 : LCM is a product of numbers into L shape.
3 | 6 | 3 | 7 | 9 |
2 | 1 | 7 | 3 |
LCM = 3 · 2 · 1 · 7 · 3 = 126