If that's 8 and 1/8 and 16 and 1/4, the LCD is 8.
The least common denominator is 16. 7/8 = 14/16.
112
LCD(12, 14, 16) = 336.
16
A common denominator, though not the least one, is 16*24 = 384.
The least common denominator of 9, 12, and 16 is 144.
The least common denominator is 144.
2
4
It is 80
624
48