LCM( 19, 7, 29, 7 ) = 3857
Step 1: Write down factorisation of each number:
19 = 19
7 = 7
29 = 29
7 = 7
Step 2 : Match primes vertically:
19 | = | 19 | ||||
7 | = | 7 | ||||
29 | = | 29 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
19 | = | 19 | ||||||
7 | = | 7 | ||||||
29 | = | 29 | ||||||
LCM | = | 7 | · | 19 | · | 29 | = | 3857 |