Pertidaksamaan nilai mutlak |x|+3x|≤2

|x+3x| ≤ 2

x+3x ≤ 2

-2 ≤ 4x < 2
-2/4 ≤ x ≤ 2/4
-½ ≤ x ≤ ½

HP = {x| -½ ≤ x ≤ ½}

semoga membantu 😉