They are 30, 60 and 90.
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Oh, dude, multiples? Like, okay, so the first three common multiples of 10 and 15 would be 30, 60, and 90. It's like when you're trying to find a parking spot and you see the same car circling around with you - that's a common multiple, man.
30 60 90
the first two common multiples of 15,27 are 135,270
Use a multiple chart. 15...15,30,45,60,75,90,105,120,135,150 25...25,50,75,100,125,150,175 10...10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160 The multiples that are the same are Common Multiples. The one that is the smallest is the lowest common multiples. 150 is the LCM. That is your answer
Multiples of 10 and 15 include 30, 60, 90, 120, 150, etc. The least common multiple (LCM) of 10 and 15 is 30.
60, 120 and 18060 , 120 , 180