Answer the following questions. Show all solution steps. Submit on or before January 31, 2021. 1. Perform the subtraction (67)8-(55)8 using the indicated methods (You must show all steps clearly) a. 8's complement method b. 10's complement method 2. Write Institute of Electrical and Electronics Engineers (IEEE) floating point of the following (Show all steps): a.-75.5 (32-bit representation) b. Decimal representation of the following 32-bit number using IEEE point standards. 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3. Implement the following Boolean function with (a) a single multiplexer, and (b) with a single decoder: F(A, B, C, D) = (0, 2, 5, 8, 10, 14) Simulate parts a and b in Logisim. Attach screenshot with inputs and outputs