anonymous
  • anonymous
Can someone please help? It's the last one i'm stuck on How do you solve the following equation by Gaussian Elimination, then indicate if the system is inconsistent or has an infinite number of solution? x + y + x = 0 x + y = 3 y + z = 1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Given, x+x+y=0 or 2x+y=0 or 2x=-y hence, x=-y/2 In the second equation, by substitution, we get, -y/2+y=3 Or, (-y+2y)/2=3 Or, y=6 hence, x=-6/2=-3 Also given that y+z=1 Or, 6+z=1 Hence, z=1-6=-5 Therefore, y=6, z=-5, x=-3

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