420 / 2 = 210
210 / 2 = 105
105 / 3 = 35
35 / 5 = 7
7 / 7 = 1
504 / 2 = 252
252 / 2 = 126
126 / 2 = 63
63 / 3 = 21
21 / 3 = 7
7 / 7 = 1
SCM = 2³ x 3² x 5 x 7 = 2520
Fun fact: 2520 is also the smallest common multiple of every number from 1 to 10
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Least Common Multiple (LCM) for 168 126 is 504.
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6552
7 is a prime number, and not a factor of 8 or 9. 1, 2, 4, and 8 are factors of 8. 1, 3, and 9 are factors of 9. 7, 8, and have no common factors. So the least common multiple of 7, 8, and 9 are 7 X 8 X 9, which equals 504504
LCM of 180 and 252To find the LCM of two numbers, list the multiples of each number until you find a multiple that is the same for both numbers. 180, 360, 540, 720, 900, 1080, 1260252, 504, 756, 1008, 1260,The least common multiple of 180 and 252 is 1260.