2 x 3 x 3 = 18
3 x 7 = 21
Combine the factors, eliminating duplicates.
2 x 3 x 3 x 7 = 126, the LCM
2 x 3 x 3 = 18 3 x 7 = 21 2 x 3 x 3 x 7 = 126, the LCM
2 x 3 x 3 = 18 3 x 7 = 21 Combine the factors, eliminating duplicates. 2 x 3 x 3 x 7 = 126, the LCM
18 = 2*3*3 21 = 3*7
18 = 21 x 32
18 = 21 x 32
Draw the prime factorization table and put both the numbers on it. Find common prime factors and divide both of them writing the products down. Do this until the quotients are either 1 or any prime number. Write down all the factors used and it will be the prime factorization. Multiply them and you will find the LCM of the numbers. Here, 18,21 6,7...................(/3) Prime factorization=6*7*3 LCM=42*3=126
It is 105 bacause 3*5*7 = 105
The prime factorization for 21 is: 3x73 x 7 = 21
2 x 3 x 3 = 18 3 x 7 = 21 2 x 3 x 3 x 7 = 126, the LCM
3 x 3 = 9 3 x 7 = 21 3 x 3 x 7 = 63, the LCM
18 = 21 x 32
2 x 3 x 3 = 18 3 x 7 = 21 2 x 3 x 3 x 7 = 126, the LCM