The two numbers are relatively prime, since 11 is a Prime number and it doesn't evenly divide 24, so the LCM (the LCD of two fractions is the LCM of their denominators) is just their product: 264.
LCD(24, 12, 16, 4, 11) = 528
LCD(2, 24) = 24
The lcd of 11 is 11.
LCD(2,6,8,24) = 24
1/3 and 3/8 have a lcd of 24 (8/24 and 9/24)
24
LCD(2, 9, 11) = 198.
LCD is 24
LCD(8, 3) = 24.
LCD(6, 8) = 24
LCD(12, 8) = 24.
LCD(4, 8, 11) = 88.