Question

. Решите неравенство методом интервалов 6x+18/7x≤0

Answer 1

6x+18/7x≤0
6(x+3)/7x ≤ 0
$left { {{6(x+3) leq 0} atop {7x textgreater 0}} right.$
$left { {{6(x+3) geq 0} atop {7x textless 0}} right.$
$left { {{ x leq -3} atop {x textgreater 0}} right.$
$left { {{x geq -3} atop {x textless 0}} right.$
x∈Ф
x∈[-3;0)