# How do you solve the system #x-y-2z=-6#, #3x+2y=-25#, and #-4x+y-z=12#?

##### 1 Answer

Feb 28, 2018

#### Explanation:

Perform the Gauss Jordan elimination on the augmented matrix

I have written the equations not in the sequence as in the question in order to get

Perform the folowing operations on the rows of the matrix

Thus,