Answer
$7-3i$, see figure.
Work Step by Step
Given $w=2-4i, z=5+i$, we have $w+z=(2+5)+(-4+1)i=7-3i$ as shown in the figure.
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.