|2х + 5| ≤ 15. Решите плиз
ツответ............................
-15 ≤ 2х+5 ≤ 15 -15-5 ≤ 2х ≤ 15-5 -20 ≤ 2х ≤ 10 -10 ≤ х ≤ 5