Question

Lesson 6
1. Write a matrix to represent the system
{x-y+z=0
x-2y-z=5
2x-y+2z=8

2. write the system of the equations represented by the matrix
[-1 2 | -6
1 1 | 7 ]
3. solve the system of equation using a matrix
{ x+3y=6
2x+4y=12