Question

решите систему неравенств

Answer 1

Вот и всё решение....

Answer 2

$left { {{4x-21leq3+x} atop {5x-8 textgreater 1+2x}} right.$
$left { {{4x-xleq3+21} atop {5x-2x textgreater 1+8}} right.$
$left { {{3xleq24} atop {3x textgreater 9}} right.$
$left { {{xleq8} atop {x textgreater 3}} right.$
x∈(3, 8]