Odpowiedź:
[tex]\begin{cases}2x-3y=1\\y=2x-3\end{cases}\\\\\\2x-3(2x-3)=1\\\\2x-6x+9=1\\\\-4x=1-9\\\\-4x=-8\ \ /:(-4)\\\\x=2\\\\\\y=2\cdot2-3=4-3=1\\\\\begin{cases}x=2\\y=1\end{cases}[/tex]
[tex]\begin{cases}3x-1=y\\2x-4y=-6\ \ /:2\end{cases}\\\\\\\begin{cases}y=3x-1\\x-2y=-3\end{cases}\\\\\\x-2(3x-1)=-3\\\\x-6x+2=-3\\\\-5x=-3-2\\\\-5x=-5\ \ /:(-5)\\\\x=1\\\\\\y=3\cdot1-1=3-1=2\\\\\begin{cases}x=1\\y=2\end{cases}[/tex]
