I need answers for question 1 and 2

Let X 5 and Y =-2 Give the inputs and outputs of a 4-bit adder/subtractor unit as depicted in Figure 5.13 (Module 40- Slide 4), to calculate X + Y Add/Sub- 512 Cn- QUESTION 2 Let X 5 and Y =-2 Give the inputs and outputs of a 4-bit adder/subtractor unit as depicted in Figure 5.13 (Module 40 - Slide 4), to calculate X-Y. x3 = L :Y1 Add/Sub- 53