{1-0,5х<4-х {9+2,8х>6-1,3х

$\left \{ {{1-0.5x\ \textless \ 4-x} \atop {9+2.8x\ \textgreater \ 6-1.3x}} \right.$
$\left \{ {{-0.5x+x\ \textless \ 4-1} \atop {2.8x+1.3x\ \textgreater \ 6-9}} \right.$
$\left \{ {{0.5x\ \textless \ 3} \atop {4.1x\ \textgreater \ -3}} \right.$
$\left \{ {{x\ \textless \ 6} \atop {x\ \textgreater \ -3:4.1}} \right.$
$\left \{ {{x\ \textless \ 6} \atop {x\ \textgreater \ -3:\frac{41}{10}}} \right.$
$\left \{ {{x\ \textless \ 6} \atop {x\ \textgreater \ -3*\frac{10}{41}}} \right.$
$\left \{ {{x\ \textless \ 6} \atop {x\ \textgreater \ -\frac{30}{41}}} \right.$
x∈( $- \frac{30}{41},$ $6$ )