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What is the LCM of 21 and 18?
The LCM of 21 and 18 is 126.
What is the LCM and the GCF of 18 and 21?
To make this easier, let's first factor 18 and 21 into their prime factors: 18=2*3^2 21=3*7 Now it's very easy to find the LCM and GCF. The LCM is 2*3^2*7=126, and the GCF is 3.
What is the LCM of 21 42 18?
LCM(21, 42, 18) = 126
What two numbers have an LCM of 36 a GCF of 3 and a sum of 21?
12 and 9. Since both have to be multiples of 3 and sum to 21, the only pairs to consider are 3 and 18 6 and 15 9 and 12 Of these, 3 and 18 have an LCM of 18 and 6 and 15 have an LCM of 30.
Lcm of 3 and 21?
The least common multiple is the smallest positive number that is the multiple of two or more numbers. 3: 3, 6, 9, 12, 15, 18, 21 21: 21 The LCM of 3 and 21 is 21.
What is the LCM of 18 21 use prime factorizations?
2 x 3 x 3 = 18 3 x 7 = 21 2 x 3 x 3 x 7 = 126, the LCM
What is the LCM of 12 18 21 40?
The LCM is 2520.
Using prime factorization find the LCM of 18 and 21?
2 x 3 x 3 = 18 3 x 7 = 21 2 x 3 x 3 x 7 = 126, the LCM
What is the LCM of 3 and 21?
The Least Common Multiple (LCM) for 3 21 is 21.
What is the LCM of 21 and 18 using prime factorization?
18 = 2 x 3 x 3; 21 = 3 x 7. Common factor is 3 so LCM = 18 x 21/3 = 126
What is the LCM of 18 21 and 56?
The least common multiple (LCM) of 18, 21, and 56 is 504.
What is LCM for 3 and 21?
The LCM of 3 and 21 is 21
