Respuesta :

LCM is 3 because
3x17=51
3x6=18
Listing out the multiples for each number  will get you 306 for both.

51: 51+51+51+51+51+51 = 306

18: 18+18+18+18+18+18+18+18+18+18+18+18+18+18+18+18+18 = 306

51*6=306  

18*17=306