x+y+z=-4
x-y+5z=-14
3x+y+z=-10

Yep and?

Please refer to This Announcement (https://www.askmehelpdesk.com/math-sciences/announcement-u-b-read-first-expectations-homework-help-board-b-u.html)

x+4y=-24
7x+5y=-30

ilovejesus, please read the other posts in that thread.

You need to do your part of work. "Heaven helps those who help themselves".

What did you do to try solving your problem?