Question

два задания на картинке.

Answer 1

Системочка
$left { {{4x-1 textgreater 6x+0.5} atop {x/2 geq x/5 -1}} right.$
$left { {{4x-6x textgreater 0.5+1} atop {5x-2x geq -1}} right.$
$left { {{-2x textgreater 1.5} atop {3x geq -1}} right.$
$left { {{x textless 0.75} atop {x geq -1/3}} right.$

x<0.75 x≥$-1 \ 3$ 
(0.75;+∞)