anonymous
  • anonymous
ive never done linear system w 4 variables. solve the linear system: A + B= 3 2B + C = 4 6A + 3B + 2C + D = 16 6B + 3C + 2D + E = 20 9A + 6C + 2E = 9
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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ivettef365
  • ivettef365
i see 5 variables
Hero
  • Hero
and 5 equations
Hero
  • Hero
The best way to solve this is with matrices.

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anonymous
  • anonymous
sorry about that, 5 variables and 5 equations
anonymous
  • anonymous
matrices?
anonymous
  • anonymous
eliminate any one variable and make four equations in four variables. then eliminate one variable and as above make three equations. then eliminate one variable and make two equations find two values by substitution or elimination or otherwise then plug the two values and find third value, then fourth and fifth.
anonymous
  • anonymous
im not really following. sorry. should i read up on a specific topic within matrices? or just matrices?
phi
  • phi
See http://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/matrices_elimination/v/matrices--reduced-row-echelon-form-1
anonymous
  • anonymous
thank you phi!!!!!! you rock!

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