Respuesta :
Answer:
{8, 9, 10}
Step-by-step explanation:
Let's substitute each of the values to see if it makes sense.
8 + 7 < 18; 15 < 18
9 + 7 < 18; 16 < 18
10 + 7 < 18; 17 < 18
11 + 7 < 18; 18 = 18
Therefore, the answer is {8, 9, 10}.
Hope this helps!