Do the following addition exercises by translating the numbers into 8-bit 2's complement binary numbers, performing the arithmetic, and translating the result back into a decimal number. Indicate where overflow occurs and why, based on the binary arithmetic:
(a) 47 + 38
(b) 47 - 38
(c) -47 - 38
(d) 47 + 88
(e) -47 + 88
(f) 47 - 88