Question

решите систему неравенств

Answer 1

$displaystyle 1)\\ left { {{x textgreater 1} atop {x textgreater 2,5}} right. Rightarrow x in(1,+infty) cap (2.5,+infty) Rightarrow xin (2.5,+infty)\\2)\\ left { {{-2x leq -3} atop {x leq 3}} right. Rightarrow left { {{x geq frac{3}{2} } atop {x leq 3}} right. Rightarrow xin [1.5,+infty)cap (-infty,3]Rightarrow xin [1.5,3]$