Question

1) 2x + 7 y - 44 = 0,
2x-3y=-36;
ОТправьте ФоТОГРАФИЕЙ это за 6 класс срочно 18 баллов написать грамотно.

Answer 1

$\left \{ {{2x + 7 y - 44 = 0} \atop {2x-3y=-36}} \right. \\\\ \left \{ {{2x + 7 y - 44 = 0} \atop {2x= 3y - 36}} \right. \\\\ \left \{ {{3y - 36 + 7 y - 44 = 0} \atop {2x= 3y - 36}} \right. \\\\ \left \{ {{10y = 80} \atop {2x= 3y - 36}} \right. \\\\ \left \{ {{y = 8} \atop {2x= 3y - 36}} \right. \\\\ \left \{ {{y = 8} \atop {x= 1,5y - 18}} \right. \\\\ \left \{ {{y = 8} \atop {x= 1,5 * 8 - 18}} \right. \\\\ \left \{ {{y = 8} \atop {x= -6}} \right.$
Ответ:(-6;8)