Respuesta :

Answer:

3i+1

Step-by-step explanation:

Don't know if this is correct but I tried my best to simply it

Answer:

-30-21i

Step-by-step explanation:

(6+4i)-(5+i)

(6+4i) - 5-i

-5(6+4i)-i

-30-20i-i

-30-20i + (-i)

-30-21i