2(x+3)=(2x+3)(3-x) himpunan penyelesaiannya????? Minta tolong

Materi : Sistem Persamaan

2(x + 3) = (2x + 3)(3 - x)
2x + 6 = 6x - 2x² + 9 - 3x
2x + 6 = 3x - 2x² + 9
2x² + 2x - 3x + 6 - 9 = 0
2x² - x - 3 = 0
(2x - 3)(x + 1) = 0
x = 3/2   atau  x = -1

jadi HP = {-1 , 3/2}