No.: 19 Penyelesaian Pertidaksamaan 3×-|×-1=7 adalah​

Nilai Mutlak

3x – |x – 1| = 7

|x – 1| = 3x – 7

x – 1 = 3x – 7

3x – x = 7 – 1

2x = 6

x = 3

x – 1 = -(3x – 7)

3x + x = 1 + 7

4x = 8

x = 8/4

x = 2

Syarat :

3x – 7 ≥ 0

x ≥ 7/3

x ≥ 2 1/3

Nilai x yang memenuhi :

x = 3