# Matrix Systems

Solve the System

{x1 + x2 = -4

{x2 + x3 = 3

{x3 + x4 = -5

{x1 + x4 =-12

(See attachment for full question).

https://brainmass.com/math/matrices/solving-matrix-systems-28948

#### Solution Summary

A system of equations is solved by the echelon method.

$2.19