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