Question

how to do LCM plases tell with step by step
​

Answer 1

Answer:

EXAMPLES

Find the LCM of these sets of numbers.

3, 9, 21

Solution:

List the prime factors of each.

3: 3

9: 3 × 3

21: 3 × 7

Multiply each factor the greatest number of times it occurs in any of the numbers.

9 has two 3s,

and 21 has one 7, so we multiply 3 two times, and 7 once. This gives us 63, the smallest number that can be divided evenly by 3, 9, and 21.

We check our work by verifying that 63 can be divided evenly by 3, 9, and 21.

      Please mark my answer as braineleist