tolong kerjakan no 3 dan 4 bsk di kumpulin

3. 4(4-x)/12 - 3(x+2)/12 = 2
16 - 4x - 3x - 6 = 2 × 12
10 - 7x = 24
10 - 24 = 7x
-14 = 7x
-2 = x

yg no 4 soalnya aneh, tanpa = padahal ada variabel x