(14 marks) Given two decimal numbers which are 115 and 76 . Perform the following prescribed subtraction with 115 being the minuend and 76 being the subtrahend. (2 marks +4 marks +8 marks) a) Perform regular subtraction on this two decimal numbers as if in elementary school. b) Convert both decimal numbers to binary. Just show the resulting binary numbers. c) Then use 2's complement for subtraction (115-76). Show your work. (10 marks) Perform the subtraction : 10011 - 10010 a) (5 marks) Treat both numbers as unsigned binary number, what are their corresponding decimal values? Using 2's complement of the subtrahend to show how subtraction is done. b) (5 marks) Treat both numbers as signed binary number represented in signed2's complement, what are their corresponding decimal values? Perform the subtraction