Answer: 7/12
Step-by-step explanation: 7 is the amount of pink roses that are in the bouquet. You can figure that out by either doing 12-5=7 or 7+5=12, either one will work. Now since you have the number of pink roses you just put 7 on top of 12 making it 7/12. The reason why it would not be 12/7 is because then it would be an improper fraction.
