himpunan penyelesaian dari persamaan |2x+5|-3=6

Bab Nilai Mutlak
Matematika SMA Kelas X

|2x + 5| - 3 = 6
|2x + 5| = 6 + 3
|2x + 5| = 9

2x + 5 = 9
2x = 9 - 5
x = 4/2
x = 2

2x + 5 = -9
2x = -9 - 5
x = -14/2
x = -7

HP = { -7, 2 }