Respuesta :

Answer:

HCF: 15 / LCM: 225

Step-by-step explanation:

The factors of 45 are: 1, 3, 5, 9, 15, 45

The factors of 75 are:  1, 3, 5, 15, 25 75.

The highest factor they share in common is 15 (HCF).

Multiples of 45: 45, 90, 135, 180, 225

Multiples of 75: 75, 150, 225, 300, 375

The lowest multiple they share in common is 225 (LCM).