Question

Решите систему неравенств . Если сделаете подпишусь

Answer 1

1)
$\left \{ {{2x+7 \geq 1} \atop x-3\ \textless \ 1}} \right. \\ \left \{ {{2x \geq -6} \atop x\ \textless \ 4}} \right. \\ \left \{ {{x \geq -3} \atop x\ \textless \ 4}} \right. \\ x\in[-3;4)$

2)
$\left \{ {{4x+9\ \textgreater \ -15} \atop {2-x \leq 5} \right. \\ \left \{ {{4x\ \textgreater \ -24} \atop {-x \leq 3} \right. \\ \left \{ {{x\ \textgreater \ -6} \atop {x \geq -3} \right. \\ x\in[-3;+\infty)$

3)
$\left \{ {{7x+9\ \textless \ 2x-1} \atop {4+11x\ \textgreater \ 9x-14}} \right. \\ \left \{ {{5x\ \textless \ -10} \atop {2x\ \textgreater \ -18}} \right. \\ \left \{ {{x\ \textless \ -2} \atop {x\ \textgreater \ -9}} \right. \\ x\in(-9;-2)$