I don’t know the answer but you can use photo math or snap calc or a app similar to those it’s really helpful and I think it could help you
Answer:
9/12
Because there are 9 pairs of shoes that are not red and a total of 12 shoes .
Im pretty sure the answer is 3/12 why? Because your selection is 12 because there are 12 months in a year the way you get three is because of march July and November...hoped this helped