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