To answer this, first multiply 7/8 by 2. To do that, multiply the numerator, 7, by 2 to get 14, which is 14/8. This is an improper fraction, and simplified it is 1 6/8. That is also equal to 1 3/4. Then multiply 4 by 2 to get 8 and add that to 1 3/4 to get your final answer: 9 3/4. Hope this helps!