Respuesta :

Answer:

77+24i

Step-by-step explanation:

First, you distribute the negative that's outside the parentheses.

215 + 30i - 138 - 61i

Then, you combine like terms.

215 - 138 = 77

30i - 61i = -31i

Lastly, you place it in standard form.

77 - 31i

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