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18 3*6 = 18 2*9 = 18
LCD(9, 6) = 18
Answer: 30 If those numbers are denominators, the least common denominator is the least common multiple of the three. In this case, 30 is the LCM of 6, 10 and 15, so 30 is the least common denominator.
If 33 and 6 are denominators of fractions then the least common denominator is 66