Chapter 1 (20 pts) 1.20 Convert decimal +49 and +29 to binary, using the signed-2's-complement representation and enough digits to accommodate the numbers. Then perform the binary equivalent of (+29)+(-49),(-29) + (+49), and (-29) + (-49). Convert the answers back to decimal and verify that they are correct. Chapter 2 (8 pts) Spring 2021 2.1 Demonstrate the validity of the following identities by means of truth tables: (a) De Morgan's theorem for three variables: (x + y + z)' - x'y'z' and (xyz)' = x' + y + z' (b) The distributive law; x+yz =(x + y)(x+2)