LCM OF 9,3 AND 21 IS 63.
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3 x 3 = 9 3 x 7 = 21 3 x 3 x 7 = 63, the LCM
126
The LCM is 126.
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42Multiples of 14: 14, 28, 42Multipled of 21: 21, 4242 is lowest number common in all three hence LCM is 42.
lcm(8, 9) = 72. 8 = 2^3 9 = 3^2 lcm = 2^3 x 3^2 = 72