Hệ phương trình \(\left\{ {\begin{array}{*{20}{c}}{3x - y - 2z = \dfrac{1}{2}}\\{ - 2x + 2y + 3z = \dfrac{{17}}{6}}\\{x + 3y - z = \dfrac{4}{3}}\end{array}} \right.\) có nghiệm là
A. \((x;y;z) = (\dfrac{4}{3},\dfrac{1}{2},\dfrac{3}{2})\)
B. \((x;y;z) = ( - \dfrac{1}{3},\dfrac{4}{3},\dfrac{1}{2})\)
C. \((x;y;z) = (\dfrac{1}{2}, - \dfrac{1}{3}, - \dfrac{3}{2})\)
D. \((x;y;z) = ( - \dfrac{4}{3}, - \dfrac{1}{2},\dfrac{2}{3})\)
