Solve, using cross-multiplication :
\[\begin{array}{l}\sqrt{2} x-\sqrt{3} y=0 \\\sqrt{5} x+\sqrt...
Solve, using cross-multiplication :
\[\begin{array}{l}\sqrt{2} x-\sqrt{3} y=0 \\\sqrt{5} x+\sqrt{2} y=0\end{array}\]
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