SOLUTION: i do not get how to do a three system using the linear combinations method. could you explain and show me how to do it? 2a+b-5c=-21 a+2b-2c=-15 a-4b+c=18 thank you

Algebra ->  College  -> Linear Algebra -> SOLUTION: i do not get how to do a three system using the linear combinations method. could you explain and show me how to do it? 2a+b-5c=-21 a+2b-2c=-15 a-4b+c=18 thank you      Log On


   

Question 20936: i do not get how to do a three system using the linear combinations method.
could you explain and show me how to do it?
2a+b-5c=-21
a+2b-2c=-15
a-4b+c=18

thank you
Answer by khwang(438) About Me  (Show Source):
You can put this solution on YOUR website!
This belongs to linear system, not linear algebra.
Kenny