36
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3 = 3 4 = 2 * 2 9 = 3 * 3 LCM = 2 * 2 * 3 * 3 = 36
The LCM of 6, 9, 4, and 2 is 36. The LCM must include at least 2·2 to be a multiple of 4 and 3·3 to be a multiple of 9. 2·2·3·3 = 36 = which is also a multiple of both 2 and 6.
The LCM of 2 and 3 is 6. The LCM of 2 and 4 is 4. The LCM of 5 and 7 is 35. The LCM of 7 and 9 is 63.
36. 9 and 4 do not have any prime factors in common. (9 = 3 x 3; 4 = 2 x 2) Therefore, you can find the least common multiple for 9 and 4 by multiplying them together. 9 x 4 = 36.
The LCM is: 36