What is the least common denominator of 11/12 and 9/8

1 . It cant be simplified because theres an odd number for both

The answer is 24, since you cannot simplify 11/12, self-add the denominators until they reach the first common number.
8x3 = 24
12x2 = 24. 
Hope this helps.

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.