Respuesta :

itzshahrad

Answer:

A

Step-by-step explanation:

You should simplify this, here [tex]i[/tex] is like a variable.

  1. [tex](7+3i)+(-8+9i)[/tex]
  2. [tex]7+3i-8+9i[/tex]

Now here you just simplify the variables and calculate the numbers.

[tex]7-8 = -1[/tex]

[tex]3i+9i=12i[/tex]

equals

[tex]-1+12i[/tex] which is "A"

I hope it helps you. Please choose my answer as the BRAINLIEST
(7＋3i)＋(－8＋9i)
＝7＋3i－8＋9i
＝－1＋12i

Hope my answer helped u :)

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