Giải hệ phương trình: \(\left\{ \begin{array}{l}3x - 5y = 7\\2x + 4y = 1\end{array} \right..\)
A.\( \left ( x;y \right ) = \left ( - \dfrac{3}{2}; - \dfrac{1}{2} \right )\)
B.\( \left ( x;y \right ) = \left (\dfrac{3}{2}; - \dfrac{1}{2} \right )\)
C.\( \left ( x;y \right ) = \left ( - \dfrac{3}{2}; \dfrac{1}{2} \right )\)
D.\( \left ( x;y \right ) = \left (\dfrac{3}{2}; \dfrac{1}{2} \right )\)
A.\( \left ( x;y \right ) = \left ( - \dfrac{3}{2}; - \dfrac{1}{2} \right )\)
B.\( \left ( x;y \right ) = \left (\dfrac{3}{2}; - \dfrac{1}{2} \right )\)
C.\( \left ( x;y \right ) = \left ( - \dfrac{3}{2}; \dfrac{1}{2} \right )\)
D.\( \left ( x;y \right ) = \left (\dfrac{3}{2}; \dfrac{1}{2} \right )\)
Loga
Hóa Học lớp 12
