Answer:
14
Step-by-step explanation:
25 + 14 = 14 + 25
39 = 39
the answer is 434843144649
x = 14
Since they are similar triangles, their sides are proportional
12 : 15 :: 8 : x - 4
Product of extremes = Product of means
12 × ( x- 4 ) = 15 × 8
12x -48 = 120
12x = 120 + 48
12x = 168
x = 168/12