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damaskus [11]
3 years ago
6

X-2y=1 x+3y+z=0 2x-2z=18

Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

Solve equation [2] for the variable  z  

 

 [2]    z = -x + 3y  

// Plug this in for variable  z  in equation [3]

  [3]    2x - 2•(-x +3?) = 18

  [3]    4x = 18

// Solve equation [1] for the variable  x  

 

 [1]    x = 2y + 1

// Plug this in for variable  x  in equation [3]

  [3]    4•(2?+1) = 18

  [3]    0 = 14 =>  NO solution

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