Answer:
-3/2 or -1.5
Step-by-step explanation:
1) Write out the numbers:
-9, -8, -7, -6, -5, -4, -3, [-2, -1] 0, 1 , 2, 3, 4, 5, 6
2)-2 and -1 are in the middle
3)Add the numbers in the middle and divide by 2
- Add the 2 numbers: (-2)+(-1)=-3
- Divide by 2: -3/2
- Answer: -1.5