$8 - 2i$
Work Step by Step
$7 + 2i + 1-4i$ $ = 7 + 1 + 2i - 4i$ $ = 8 - 2i$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.