Q: What is the LCM of 7 21 and 5?

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The LCM of 7 21 35 is 105

210. 30 = 2 x 3 x 5 21 = 3 x 7 lcm = 2 x 3 x 5 x 7 = 210

2/3 + 5/7 (the common denominator is 21, the LCM of 3 and 7) = 2*7/3*7 + 5*3/7*3 = 14/21 + 15/21 = (14 + 15)/21 = 29/21 = (21 + 8)/21 = 21/21 + 8/21 = 1 + 8/21 = 1 8/21

Note that 21 x 2 = 42, so we really only need to look at 35 and 42. So 7 x 5 = 35, and 7 x 6 = 42. There is a common factor of 7. So we have 7 x 5 x 6 = 210 is the LCM.

LCM of 4 7 12 21 is 84

Related questions

LCM of 5 7 21 is 105.

105

What two numbers have 10 as the least common multiple

Prime factors of 21 are: 3 and 7 Prime factors of 40 are: 23 and 5 LCM = 23*3*5*7 = 840

3 is a factor of 21, so ignore it. 21 factors to [3 7] 35 factors to [5 7] common factor [7] LCM = 21 * 35 / 7 = 105 ■

3 x 5 = 15 3 x 7 = 21 3 x 5 x 7 = 105, the LCM

The LCM is 42

The LCM is 84.

3 x 5 = 15 3 x 7 = 21 3 x 5 x 7 = 105, the LCM

To find the Least Common Multiple (LCM) of 7, 3, and 21, we first need to identify the prime factors of each number. The prime factors of 7 are 7, of 3 are 3, and of 21 are 3 and 7. Then, we take the highest power of each prime factor that appears in any of the numbers. In this case, the LCM of 7, 3, and 21 is 21, as it includes the highest power of both 7 and 3.

The Least Common Multiple of 35 and 21 is 105.

The LCM of 7 21 35 is 105