I did question 1.7, but I need help with 1.8. I'm not sure how to subtract binary numbers.

[M] Repeat Problem 1.7 for the subtract operation, where the second number of each pair is to be subtracted from the first number. State whether or not overflow occurs in each case.

1.7 [M] Convert the following pairs of decimal numbers to 5 bit 2's-complement numbers, then add them. State whether or not overflow occurs in each case. (a 4 and 11 (b) 6 and 14 (c) -13 and 12 (d) -4 and 8 (e) -2 and -9 f) -9 and -14 1.8 [M] Repeat Problem 1.7 for the subtract operation, where the second number of each pair is to be subtracted from the first number. State whether or not overflow occurs in each case