Have a look at the attached image.
X = 35, because the angles on top and bottom are equal, so its 60 - 25=35
So firstly, I would foil 5(2x - 8). 
Next, I would combine like terms: 
Next, I would add 25 on each side: 
Finally, I would divide 10 on each side, and my answer would be x = 1.
Answer:
This represents 3 and one-third divided by two-thirds because 10/3 = 3 and 1/3.