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1. Write a matrix representing the system of equations

x+2y+z=5

2x-y+2z=15

3x+y-z=8

Solve the system by transforming your matrix into reduced row echelon form. State the solution as an ordered triple.

 

2. Solve the system of equations by forming a matrix equation, then solve using inverse matrices. State your answer as an ordered pair.

x+2y=-7

-3x-5y=23

 

Appreciate any help! 

 Oct 12, 2023
 #1
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Here's a starter:

 

 Oct 13, 2023
 #2
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Yes, this makes sense. I'm not sure how to get reduced row echelon form though. 

Sheneedshelp1  Oct 13, 2023
 #3
avatar+33595 
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Have a look at this video:  https://www.youtube.com/watch?v=l69YjkuUym0

Alan  Oct 14, 2023

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