140, 280, 420
140, 280, 420
2 and 4 are common multiples of the numbers 14 and 20
15 & 20 have an infinite number of Common Multiples; the first three are 60, 120 and 180.
140
10, 20, 30 The common multiples of 5 and 10 are multiples of their lowest common multiple. The lcm of 5 and 10, is 10. Thus the first three common multiples are 10, 20, 30.
1, 660, 5580
20, 40, 60
20, 40, and 60.
10, 20, 30
10, 20, 30
140, 280, 420
40, 80 & 120.