Problem 2 [20 points] a) Perform the following additions and subtractions of the following unsigned integers in binary. Use the fewest number of bits n to represent both operators. Indicate every carry (or borrow) from co to cn (or bo to bn). For the addition, determine whether there is an overflow. For the subtraction, determine whether we need to keep borrowing from a higher byte. (8 pts) 42 + 80 10-20 b) Perform the following operations in binary, where numbers are represented in 2's complement. Indicate every carry from co to Cn. For each case, use the fewest number of bits to represent the summands and the result so that overflow is avoided. (8 pts) -51 11 121 +11 c) Perform binary multiplication of the following numbers that are represented in 2's complement arithmetic. (4 pts) 13 x -8