Answer:
5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, etc.
8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, etc.
Explanation:
Common multiples are found as you multiply like how i got a common multiple of five and it was 20 we simply multiply 5 times 4 and get 20.