Answer:
1 (plus 1/6 cup of the original 2/3 cup left over)
Explanation:
The LCD of 1/2 and 2/3 is 6. Thus, 1/2 and 2/3 are equivalent to 3/6 and 4/6. 3/6 divides into 4/6 once, with a remainder of 1/6 (cup).
Answer: just one 1/2 cup serving can be made from 2/3 cup of cole slaw, with 1/6 cup of the original 2/3 cup of slaw left over.