Respuesta :

sqdancefan

Answer:

  • x = 31 - 2y - 3z
  • y = (31 - x - 3z)/2
  • z = (31 -x -2y)/3

Step-by-step explanation:

Subtract the terms not containing the variable of interest, then divide by the coefficient of the variable.

  x = 31 -2y -3z . . . . . the coefficient of x is 1, so we're done

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  2y = 31 -x -3z

  y = (31 -x -3z)/2

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  3z = 31 -x -2y

  z = (31 -x -2y)/3

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