Question

помогите пожалуйста срочно​

Answer 1

$\displaystyle\bf\\\left \{ {{5(2x-1)+3>2(x-1)+7x} \atop {6(1-x)+2\geq 3(x+1)-7x}} \right. \\\\\\\left \{ {{10x-5+3>2x-2+7x} \atop {6-6x+2\geq 3x+3-7x}} \right. \\\\\\\left \{ {{10x-9x>-2+2} \atop {-6x+4x\geq 3-8}} \right. \\\\\\\left \{ {{x>0} \atop {-2x\geq -5}} \right. \\\\\\\left \{ {{x>0} \atop {x\leq 2,5}} \right. \\\\\\x\in\Big(0 \ ; \ 2,5\Big] \ summa \ 3$