Question

13. The LCM (12,15,21) using prime factorization is
420
400
84
140​

Answer 1

Answer:

uttxutshjxjgxngdjgxjgxn mb mb m mb m . ckckckckfjyckyfkyfkfkfjzkfjdkf

Step-by-step explanation:

cgiyfjyfkyckuckcjckckyckckcjfjfjyfjtfjtxjgiygjfjdhxjfjf

Answer 2

Answer:

12=2×2×3×1

15=3×5×1

21=3×7×1

therefore,

LCM=3×2×2×5×7×1

=420

Step-by-step explanation:

in the prime factorization

We have to take all the common and uncommon factors.