Ответ: [tex] \left \{ {{4x-y=11} \atop {6x-2y=13}} ight. \left \{ {{y=4x-11} \atop {6x-2*(4x-11)=13}} ight. [/tex]6x-2*(4x-11)=136x-8x+22=13-2x=13-22-2x=-9  |*(-1)2x=9x=4,54*4,5-y=1118-y=11y=7[tex] \left \{ {{x=4,5} \atop {y=7}} ight. [/tex]