You need at least two numbers to find an LCM.
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You need at least two numbers to find an LCM. If that's 12 and 30, the LCM is 60.
LCM(17, 13, 2) = 442
lcm(8 12 13) = 312 Using prime factorisation: 8 = 2³ 12 = 2² x 3 13 = 13 lcm = 2³ x 3 x 13 = 312
Since 52 is a multiple of 13, it is automatically the LCM.
26 can be factorized into 13 and 2. 65, factorized into 13 and 5. Hence common factor is 13. So to get LCM we have to chose the common and those not common. Here not common factors are 2 and 5. Hence the LCM is 13x2x5=130.
5 x 13 = 65 2 x 3 x 13 = 78 2 x 3 x 5 x 13 = 390, the LCM