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The LCM is 42
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42
What is the LCM of 7 14 and 21
2 x 7 = 14 3 x 7 = 21 2 x 3 x 7 = 42, the LCM
The LCM is: 84
The least common multiple of the numbers 7, 18 and 21 is 126.
The LCM is 168.
42, 84, 126, 168, 210 The least of these is 42.