Respuesta :

ndgmPA

Answer:

84

Step-by-step explanation:

Answer:

84

Step-by-step explanation:

Prim factorize

7 = 7

14 = 7 * 2

28 = 7 * 2 * 2

42 = 7 * 2 * 3

LCM = 7 * 2* 2  * 3 = 84