tolong dijawab caranya!!

Materi : Program Linear
Bahasan : Persamaan Linear 1 Variabel
Jawaban : x = 2

Langkah - langkah :
KPK = 12
(x - 10) / 4 = (2x - 10) / 3
3(x - 10) = 4(2x - 10)
3x - 30 = 8x - 40
3x - 8x = - 40 + 30
- 5x = - 10
x = 2