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First you Prime Factorize the two (or more) numbers.
The LCM of the two (or more) numbers must contain all the prime factors of the two (or more) numbers that made it.
To find the LOWEST common multiple, for each prime factor, find from one of the numbers where the prime factor has the highest power. The highest powers of each prime multiply together to form the LCM of the numbers.
e.g.
LCM of 36 and 24
36 = (2^2)(3^2)
24 = (2^3)3
LCM = (2^3)(3^2)
= 72
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If the HCF and LCM of two numbers are 17 and 102 respectively and the HCF and LCM of two other numbers are 68 and 476 respectively then find the sum of the HCF and LCM of these four numbers?
HCF of 17 and 68 is 17 ..( Lowest Prime factor ) LCM Of 102 and 476 is 7*2^2*3*17 which is 1428 .. ==> Sum of HCF and LCM are 1428+17= 1445 .
What is the LCM of the numbers 2 5 12 15?
The LCM=60
What is the Lcm 2 8 and 12?
The LCM of these numbers is 24 . LCM is Least common multiple.
What is the LCM 2 and 3 and 9?
The LCM of these numbers is 18. LCM is Least Common Multiple.
The gcd of 72 and 252 is 36 find their LCM?
If you have two numbers m and n and their gcd (or gcf), g then their LCM = m*n/g so LCM = 72*252/36 = 2*252 = 504.
