Because why not?
2 = 21
10 = 21 x 51
15 = 51 x 31
Take each unique factor along with its highest power
21 x 31 x 51 = 2 x 3 x 5 = 30
LCM = 30
2 x 15 = 30
15 x 2 = 30
10 x 3 = 30
This is the LCM.
Thank you jelly
No problem.