Odpowiedź:
[tex]\begin{cases}-\frac{2}{3}x+3y=4\\\frac{1}{2}x-2\frac{1}{4}y=5\end{cases}\\\\\\\begin{cases}-\frac{2}{3}x+3y=4\ \ /\cdot3\\\frac{1}{2}x-\frac{9}{4}y=5\ \ /\cdot4\end{cases}\\\\\\+\begin{cases}-2x+9y=12\\2x-9y=20\end{cases}\\---------\\0=32\\\\Uklad\ \ r\'owna\'n\ \ sprzeczny\ \ nie\ \ ma\ \ rozwiazania[/tex]
