Tentukan banyak penyelesaian dari persamaan | x - | 2x + 1 || = 3 Tolong jawab secepatnya Besok dikumpulin

NiLai MuTLak

|x - |2x + 1|| = 3
▶
x - |2x + 1| = 3
|2x + 1| = x - 3
•
2x + 1 = x - 3
x = -4 (tdk memenuhi)
•
|2x + 1| = -(x - 3)
2x + x = 3 - 1
3x = 2
x = 2/3 (tdk memenuhi)

▶
x - |2x + 1| = -3
|2x + 1| = x + 3
•
2x + 1 = x + 3
x = 2
•
2x + 1 = -(x + 3)
3x = -4
x = -4/3

HP = {-4/3 , 2}