Решите систему неравенств! Срочно, пожалуйста!! Буду очень благодарна!!!

1) $\left \{ {{2x+3 \geq x-1} \atop {5x-22 \leq x+2}} \right.$
$\left \{ {2x-x \geq -1-3} \atop {5x-x \leq 2+22}} \right. \left \{ {{x \geq -4} \atop {4x \leq 24}} \right. \left \{ {{x \geq 4} \atop {x \leq 6}} \right.$
Ответ: х∈[4;6]
2) $\left \{ {{7x+9\ \textless \ 2x-1} \atop {4+11x\ \textgreater \ 9x-14}} \right. \left \{ {{5x\ \textless \ -10} \atop {2x\ \textgreater \ -18}} \right. \left \{ {{x\ \textless \ -2} \atop {x\ \textgreater \ -6}} \right.$
Ответ: х∈(-6;-2)
3) $\left \{ {{x \geq 0} \atop {x-5\ \textgreater \ 2x+1}} \right. \left \{ {{x \geq 0} \atop {x\ \textless \ -6}} \right.$
Ответ: (-∞;6)