The problem explained that 1/6 of the party guests were Wildcats fans this means that 6 is the whole. if one sixth is if you are to subtract the numerators given. we know the whole is 6 and 1/6 of the party guests were Wildcats fans so if you were to subtract 6/6 by 1/6 your answer would be 5 out of 6 Knight fans.
is negative, it doesn't have any real roots.