Ebatzi: t
\left\{\begin{matrix}t>\frac{23}{85-27s}\text{, }&s<\frac{85}{27}\\t<\frac{23}{85-27s}\text{, }&s>\frac{85}{27}\end{matrix}\right.
Ebatzi: s
\left\{\begin{matrix}s>\frac{85}{27}-\frac{23}{27t}\text{, }&t<0\\s<\frac{85}{27}-\frac{23}{27t}\text{, }&t>0\end{matrix}\right.
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