Question

помогите решить Систему неравенств даю 50 баллов​

Answer 1

$\beta )\left \{ {{4x+9>-15} \atop {2-x\leq 5}} \right. \Rightarrow \left \{ {{4x>-15-9} \atop {-x\leq 5-2}} \right. \Rightarrow \left \{ {{4x>-24} \atop {-x\leq 3}} \right. \Rightarrow \left \{ {{x>-{24\over4}} \atop {x\geq -3}} \right. \Rightarrow \left \{ {{x>-6} \atop {x\geq -3}} \right. \Rightarrow x\geq -3$

Ответ: x ≥ -3

$\beta ) \left \{ {{2x+3\geq x-1} \atop {5x-22\leq x+2}} \right. \Rightarrow \left \{ {{2x-x\geq -1-3} \atop {5x-x\leq 2+22} \right. \Rightarrow \left \{ {{x\geq -4} \atop {4x\leq 24}} \right. \Rightarrow \left \{ {{x\geq -4} \atop {x\leq {24\over4}}} \right. \Rightarrow \left \{ {{x\geq -4} \atop {x\leq 6}} \right. \Rightarrow -4\leq x\leq 6$

Ответ: -4 ≤ x ≤ 6