nilai x Pakai cara....

12 = x.14 + 9.4 : x + 4
12 = 14x + 36 : 4 + x
= 14x + 36 = 12 (4 + x )
= 14x + 36 = 48 + 12x
= 14x - 12x = 48 - 36
= 2x = 12
= x = 12: 2
= x = 6 (a)

Maaf kalo salah ya