Решите системы неравенств

$\left \{ {{x+1,8 \leq 0} \atop {x+0.5 \leq -0.5}} \right. \left \{ {{x \leq -1.8} \atop {x \leq -1}} \right. \left \{ {{++[-1.8]------\ \textgreater \ x} \atop {++++++++[-1]-\ \textgreater \ x}} \right.$
$x$ ∈ $(-\infty;-1.8]$
Ответ: 1.

$\left \{ {{x+3 \geq -2} \atop {x+1.1 \geq 0}} \right. \left \{ {{x \geq -5} \atop {x \geq -1.1}} \right. \left \{ {{-[-5]++++++++\ \textgreater \ x} \atop {------[-1,1]++\ \textgreater \ x}} \right.$
$x$ ∈ $[-1.1;+\infty)$
Ответ: 2.

$\left \{ {{x\ \textless \ 9} \atop {8-x\ \textgreater \ 0}} \right. \left \{ {{x\ \textless \ 9} \atop {x\ \textless \ 8}} \right. \left \{ {{+++++++(9)--\ \textgreater \ x} \atop {+++(8)------\ \textgreater \ x}} \right.$
$x$ ∈ $(-\infty;8)$
Ответ: 2.

$\left \{ {{x\ \textless \ 3} \atop {4-x\ \textgreater \ 0}} \right. \left \{ {{x\ \textless \ 3} \atop {x\ \textless \ 4}} \right. \left \{ {{++++(3)--------\ \textgreater \ x} \atop {++++++++++(4)--\ \textgreater \ x}} \right.$
$x$ ∈ $(-\infty;3)$
Ответ: 3.