168
Actually, since the two numbers share a common factor of 2, you are only required to find 2X6X7, which is 84. This is the first number in which both 12 and 14 can be found as factors.
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84
The LCM is: 168
The least common multiples of 7 and 14 are 14,28 and 42>
They meet first at their least common multiple (LCM).
The lowest common multiple of 8 and 14 is 56.