Question

Розв'язати систему нерівностей

Фото:

Answer 1

$\displaystyle\bf\\1)\\\\\left \{ {{5x>-25} \atop {-7x>14}} \right.\\\\\\\left \{ {{x>-5} \atop {x<-2}} \right. \\\\\\Otvet:x\in\Big(-5 \ ; \ -2\Big)\\\\\\2)\\\\\left \{ {{6x-7\geq 4x-3} \atop {3x+16\geq 8x-4}} \right. \\\\\\\left \{ {{6x-4x\geq -3+7} \atop {3x-8x\geq -4-16}} \right.\\\\\\\left \{ {{2x\geq 4} \atop {-5x\geq -20}} \right. \\\\\\\left \{ {{x\geq 2} \atop {x\leq 4}} \right.$

$\displaystyle\bf\\Otvet:x\in\Big[2 \ ; \ 4\Big]$