Answer:
D, ½.
Step-by-step explanation:
Start by dividing both members of the equation by 10. You will get 8x - 1 = 3. Move 1 to the other side and change its sign (8x = 3 + 1). Sum 3 + 1 (8x = 4). Divide both 8x and 4 by 8 and you will get (8/8)x = 4/8: 8 divided by 8 equals 1, so x = ½.
