Okay. 10 * (1/2n + 6) = 8. All I know is 1/10 of 8 is 0.8. So, half of a number plus six has to be 0.8. I think we have to go back 6 from 0.8. With that, the sum is -5.2. Then, we have to multiply that by two, and then we get -10.4. The answe is that n = -10.4