Respuesta :
Answer:
a+b
-9+(-4)
-9-4
-13
therefore -13 is the answer
Answer:
The value is D, -13
Step-by-step explanation:
We know that a is equal to -9, and b equals -4. Let's substitute these values into a + b.
The equation becomes:
-9 + -4
Then we simplify...
-9 + -4 = -9 - 4 = -13
That means the answer is D, -13. Hope this helps!