2x-(x+5)=x+2 bantu ya

Mapel : Matematika
Kelas : X SMA
Materi : Persamaan Nilai Mutlak

Pembahasan :
2x - |x + 5| = x + 2
|x + 5| = 2x - x - 2
|x + 5| = x - 2
(x + 5)² = (x - 2)²
(x + 5)² - (x - 2)² = 0
(x + 5 + x - 2)(x + 5 - x + 2) = 0
(2x + 3)(7) = 0
14x + 21 = 0
14x = -21
x = -21/14
x = -3/2