6) 2 - 1 / (2 - 1 / (2 - 1/2))

2 - 1/2 = 3/2. 1 / (3/2) = 2/3. 2 - 2/3 = 4/3. 1 / (4/3) = 3/4. 2 - 3/4 = 5/4.
Answer: 5/4