Please Help Me!!

Question

Perform the specific elementary row operation and type the resulting system of equations. 



-x +  y −  z = 10

3x − 2y + 6z = 4 

  x + 2y +  z = 5

  

(Eq₁) 

    

  

(Eq₂) 

    

(Eq₃) 

Answer 1

-x +  y −  z = 10

3x − 2y + 6z = 4 

  x + 2y +  z = 5

It looks like this is asking you to trade places, equation 1 and equation 3. This is because normally it is easiest if the variable with a 1 is in row 1 and column 1. The result would be:

  

(Eq₁)   x + 2y +  z = 5

 

(Eq₂)  3x − 2y + 6z = 4 

(Eq₃)  -x +  y −  z = 10

I expect they are asking to to solve this, there would be a series of row operations to do the whole problem.