Algebra problem. (matrices)

Algebra
Tutor: None Selected Time limit: 1 Day

solve the system of equations using matrices. Use Gaussian elimination with back substitution gauss jordan elimination. 

x + y + z = - 2

x - y - z = - 4

x - y + z = - 6

Jun 29th, 2015

Thank you for the opportunity to help you with your question!

Add (-1 * row1) to row2

111-2
0-2-2-2
1-11-6


Add (-1 * row1) to row3

111-2
0-2-2-2
0-20-4


Divide row2 by -2

111-2
0111
0-20-4


Add (2 * row2) to row3

111-2
0111
002-2


Divide row3 by 2

111-2
0111
001-1


Add (-1 * row3) to row2

111-2
0102
001-1


Add (-1 * row3) to row1

110-1
0102
001-1


Add (-1 * row2) to row1

100-3
0102
001-1

Final answer is X= -3, Y= 2 and Z= -1

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 29th, 2015

You are really good at this

Jun 29th, 2015

Thanks so much . ...:)

Jun 29th, 2015

Quick question? If I posted a paid question for $1 because that is literally all I have right now in my bank. Would you want to answer 4 problems for me like this? Please?

Jun 29th, 2015

I promise I will pay a lot more the next time I need help Cause I have a quiz coming up that I am going to need help on lol

Jun 29th, 2015

Ok, I will if I can. 

Jun 29th, 2015

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Jun 29th, 2015
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Jun 29th, 2015
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