The first 5 common multiples are:
7x20 = 140
2x7x20 = 280
3x7x20 = 420
4x7x20 = 560
5x7x20 = 700
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The first five multiples of 5 are 5, 10, 15, 20 and 25. For them to be common, they need to be compared to another set of multiples.
The first two common multiples of 235 is 5 and 47.
The LCM of 4 and 5 is 20.To find it, you can list the multiples of each number. The first one that the numbers have in common is the Least Common Multiple or LCM.The multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, and so on.The multiples of 5 are 5, 10,15, 20, 25, 30, 35, 40, and so on.The first multiple that they have in common is 20, so it is the LCM.20It is 2020
The first 5 multiples of 5 are: 5, 10, 15, 20 and 25.5, 10, 15, 20, 25
20 ,40,60,80,100