Considere o seguinte sistema linear e assinale a alternativa que corresponde à sua solução. open curly brackets table attributes columnalign left ...

Considere o seguinte sistema linear e assinale a alternativa que corresponde à sua solução. open curly brackets table attributes columnalign left end attributes row x cell negative 2 y end cell cell plus z end cell equals 3 row cell negative 2 x end cell cell plus y end cell cell plus z end cell equals cell negative 1 end cell row cell negative x end cell blank cell plus 2 z end cell equals 0 row blank end table close a. x equals negative 2 over 3, y equals negative 2 e z equals negative 1 third. b. x equals negative 2 over 3, y equals negative 1 e z equals negative 1 third. c. x equals 2 over 3, y equals 0 e z equals 2 over 3. d. x equals negative 1 third, y equals negative 1 third e z equals negative 1 third. e. x equals 1, y equals negative 2 over 3 e z equals negative 1 third.