EXERCISE 6 Give a TM that implements subtraction on unsigned, binary numbers, assuming stacked inputs as for the add TM of Section 17.3. Assume that the second operand is less than or equal to the first, so that the result can be represented as an unsigned, binary number. EXERCISE 6 Give a TM that implements subtraction on unsigned, binary numbers, assuming stacked inputs as for the add TM of Section 17.3. Assume that the second operand is less than or equal to the first, so that the result can be represented as an unsigned, binary number