Два задания на картинке.

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≥<img src="https://tex.z-dn.net/?f=-1+%5C%5C+3" id="TexFormula5" title="-1 \\ 3" alt="-1 \\ 3" align="absmiddle" class="latex-formula">
(0.75;+∞)

Два задания ** картинке.