Bài 1:
a: \(\Leftrightarrow\left\{{}\begin{matrix}2x-4y=10\\3x+4y=5\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=3\\y=-1\end{matrix}\right.\)
b: \(\Leftrightarrow\left\{{}\begin{matrix}2\sqrt{3}x+3y=\sqrt{3}\\2\sqrt{3}x+2y=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}y=\sqrt{3}\\x=1\end{matrix}\right.\)
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