\(12< x< y< 16\)
để \(12< x< 16\Leftrightarrow x\in\left\{13;14;15\right\}\)
nếu \(x=13\Leftrightarrow y=\left\{14;15\right\}\)(t/m đk)
nếu \(x=14\Leftrightarrow y=\left\{15\right\}\) (t/m đk )
nếu \(x=15\Leftrightarrow y=\left\{\varnothing\right\}\)
vậy để \(112< x< y< 16\) thì \(x=\left\{13,14\right\}\) ; \(y=\left\{14;15\right\}\)