alissarose0508 alissarose0508
  • 06-12-2016
  • Mathematics
contestada

5x+9y+z=20
2x-y-z=-21
5x+2y+2z=-21

Respuesta :

RBurns
RBurns RBurns
  • 06-12-2016


this is the answer x,y.z=-7,6,1

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