perhatikan gambar berikut. nilai x=..... tolong pke cara ya

EF = AD. EB+BC. EA/AE+EB
12 = 9.4+14.X/ X+4
12X+48 = 36+14X
48-36 = 14X-12X
12 = 2X
6 = X

semoga membantu ya ^^