###Human: Justice has 3 ferns, 5 palms, and 7 succulent plants in her house. If she wants a total of 24 plants in her home, how many more plants does she need?, ### Assistant: Justice currently has 3 + 5 + 7 = 15 plants in her house
Justice needs 24 - 15 = 9 more plants 
 So the answer is :  9