SOLUTION: Solve the following system of equations. 2x + 4y – 3z = –7 3x + y + 4z = –12 x + 3y + 4z = 4 please show work

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Question 633376: Solve the following system of equations.
2x + 4y – 3z = –7
3x + y + 4z = –12
x + 3y + 4z = 4
please show work
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Solve the following system of equations. 

2x + 4y – 3z = –7

 3x + y + 4z = –12

 x + 3y + 4z = 4 

D = -72, Dx = 432,  Dy = -144,  Dz = -72

  x = -6,  y = 2, z = 1