Respuesta :

Tasyha

Answer:

11 - 9i

Step-by-step explanation:

[tex](12 - i) + ( - 1 - 8i)[/tex]

[tex]12 - i + ( - 1 - 8i)[/tex]

[tex]12 - i - 1 - 8i[/tex]

[tex]11 - i - 8i[/tex]

[tex] = 11 - 9i[/tex]

Yang100

Answer:

11-9i

Step-by-step explanation:

(12-i)+(-1-8i)

12-i-1-8i

12-1-i-8i

11-i-8i

11-9i

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