Find the LCM of the followinga) 16,-12,-4,8,28b)-30,-15,10,20

1.	Find the LCM of the followinga) 16,-12,-4,8,28b)-30,-15,10,20
Answer» Answer: a - 336 b- 60 explanation: For each prime factor, find where it occurs most often as a factor and write it that many TIMES in a new list. The new superset list is 2, 2, 3, 5 Multiply these factors together to find the LCM. LCM = 2 X 2 x 3 x 5 = 60 In exponential form: LCM = 22 x 31 x 51 = 60 LCM = 60 Therefore, LCM(10, 15, 20, 30) = 60

Answer»

Answer:

a - 336

b- 60

explanation:

For each prime factor, find where it occurs most often as a factor and write it that many TIMES in a new list.

The new superset list is

2, 2, 3, 5

Multiply these factors together to find the LCM.

LCM = 2 X 2 x 3 x 5 = 60

In exponential form:

LCM = 22 x 31 x 51 = 60

LCM = 60

Therefore,

LCM(10, 15, 20, 30) = 60

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