Respuesta :
Answer:
-9-8i
Step-by-step explanation:
(3+i)+(-12-9i)
3+i-12-9i
3-12+i-9i
-9+i-9i
-9-8i
If you're satisfied with the answer, then please mark me as Brainliest.
Answer:
-9-8i
Step-by-step explanation:
(3+i)+(-12-9i)
3+i-12-9i
3-12+i-9i
-9+i-9i
-9-8i
If you're satisfied with the answer, then please mark me as Brainliest.