H
hoathuytinh16021995
hệ nhé mọi ng
\begin{matrix}
\sqrt{x+y}+\sqrt{x+2y+2}=7 & \\
\sqrt{2x+1}+\sqrt{3y+1}=7
\end{matrix}.
\begin{matrix}
\sqrt{x+y}+\sqrt{x+2y+2}=7 & \\
\sqrt{2x+1}+\sqrt{3y+1}=7
\end{matrix}.
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