Question

Помогите пожалуйста с системой уровнения, ввиде фотографий:
7 Класс.

Answer 1

$\left \{ {{3x-2y=3} \atop {2x-4y=-2}} \right. \left \{ {{-6x+4y=-6} \atop {2x-4y=-2}} \right. |+ \left \{ {{-6x+4y=-6} \atop {-4x=-8}} \right. \left \{ {{-12+4y=-6} \atop {x=2}} \right. \left \{ {{4y=6} \atop {x=2}} \right. \left \{ {{y=1.5} \atop {x=2}} \right.$
Ответ: $(2;1.5)$

$\left \{ {{2x+9y=20} \atop {9x+2y=13}} \right. \left \{ {{18x+81y=180} \atop {-18x-4y=-26}} \right. |+ \left \{ {{2x+9y=20} \atop {77y=154}} \right. \left \{ {{2x+18=20} \atop {y=2}} \right. \left \{ {{x=1} \atop {y=2}} \right.$
Ответ:$(1;2)$

$\left \{ {{x+2y=3} \atop {4y+2x=5}} \right. \left \{ {{4y+2x=6} \atop {4y+2x=5}} \right.$