Question 633414
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Hi,
Find the unknown:
 x + y - 2z = 7
 2x - 3y + 2z = 0
 x - 2y - 3z = 3
 d = 23,  Dx = 79,  Dy = 38, Dz = -22
  x = 79/23,  y = 38/23,  z = -22/23