Respuesta :

Answer:

-10 -4i

Step-by-step explanation:

To subtract complex numbers, subtract the real parts.

-3 -7 = -10

and then the complex parts.

5i-9i = -4i


(-3 + 5i) - (7 + 9i) = -10 -4i

Answer:

-10 -4i

Step-by-step explanation: