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36
LCD(4, 9) = 36.
LCD(9, 1, 4) = 36
The common denominator of 15 and 9 is 45.
The common denominator of 9 and 13 is 1
It is 36.
The common denominator of 5 over 8 and 4 over 9 is 72.
It is: 180
9
756
72