Question

ПОМОГИТЕ ПОЖАЛУЙСТА ДАЮ ВСЕ БАЛЫ​

Answer 1

$\displaystyle\\\left \{ {{3x+2y=1} \atop {2x+5y=8}|\times(-1,5)} \right. \\\\\left \{ {{3x+2y=1} \atop {-3x-7,5y=-12} \right.\\\\3x-3x+2y-7,5y=1-12\\-5,5y=-11\\y=2= > \\3x+2*2=1\\x=-1$

Ответ: $(-1;2)$

$\displaystyle\\\left \{ {{3x-2y=12|\times1,5} \atop {4x+3y=-1}} \right. \\\\\left \{ {{4,5x-3y=18} \atop {4x+3y=-1}} \right.\\\\4,5x+4x-3y+3y=18-1\\8,5x=17\\x=2= > \\4\times2+3y=-1\\y=-3$

Ответ: $(2;-3)$

$\displaystyle\\\left \{ {{3x-2y=0|\times-1,5} \atop {5x-3y=19}} \right. \\\\\left \{ {{-4,5x+3y=0} \atop {5x-3y=19}} \right. \\\\-4,5x+5x+3y-3y=19\\0,5x=19\\x=38= > \\5\times38-3y=19\\y=57$

Ответ: $(38;57)$