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
20 ,40,60,80,100
The first 5 multiples of 5 are: 5, 10, 15, 20 and 25.5, 10, 15, 20, 25