Nilai x yang memenuhi |3x+1|_< 4adalah

Bab Nilai Mutlak
Matematika SMA Kelas X

|3x + 1| <= 4

-4 <= 3x + 1 <= 4
-4 - 1 <= 3x + 1 - 1 <= 4 - 1
-5 <= 3x <= 3
-5/3 <= 3x/3 <= 3/3
-5/3 <= x <= 1

HP = { x | -5/3 <= x <= 1, x € bilangan real }