Respuesta :

devshreeneelam5599

Answer:

a+b

-9+(-4)

-9-4

-13

therefore -13 is the answer

CharlesGP

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!