Question

срочно помогите дам 15б

Answer 1

$\left \{ {{x-a < 0} \atop {-x+b > 0}} \atop {bx > 0}} \right. \\\left \{ {{x < a} \atop {x < b}} \atop {x > 0}} \right.$

Ответ: x ∈ (0;a)