The values of (x,y,z) are (3,-1,-2) , if the given are equations , and .
Step-by-step explanation:
The given is,
             .......................................(1)
             ......................................(2)
              .........................................(3)
Step:1
      Equation (2) is multiplied by -1       ( Eqn(2) × -1 )
                     .............................(4)
     Subtract the equation (1) and (4)
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         ( - )
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                         ......................(5)
Step:2
     Equation (2) is multiplied by -2         ( Eqn(2) × -2)
                    ........................(6)
     Subtract equation (6) and (3),         Â
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                    Â
          ( - )
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                          Â
                            Â
                             z = -2
     From the equation (5),
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                              x = -1
     From equation (1),
                     Â
     Substitute x and z values,
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                          Â
                             Â
                             Â
                             Â
                               y = 1
Step:3
        Check for solution,
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        Substitute x,y and z values,
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                    Â
                          -5 = -5
Result:
       The values of (x,y,z) are (3,-1,-2) , if the given are equations , and .