Respuesta :
Answer:
C, 6-9
Step-by-step explanation:
All of the other answers equal 3 but C is equal to -3
Answer:
6-9
Step-by-step explanation:
9-6=3
9 + (-6) ---> 9-6=3
-6-(-9) --->-6+9=3 (Negative and negative turn to positive
6-9=-3
So, the answer is the last one
