Question

Решите систему неравенств

Answer 1

$left { {{6-4a leq 2} atop {6-a>2}}atop {3a-1leq 8} right. Rightarrow left { {{-4a leq 2-6} atop {-a>2-6}}atop{3a leq 8+1} right. Rightarrow left { {a geq 1}atop {a<4atop {a leq 3}}right. Rightarrow 1 leq a leq 3$
Ответ. [1;3]