A nbit subtractor is constructed using an nbit binary adder

A n-bit subtractor is constructed using an n-bit binary adder and n AND gates n EXOR gates. one AND gate. one EXOR gate

Solution

A n bit subtractor is constucted using a n bit binary adder and

n EXOR gates

since we can perform substraction in form of addition with 2\'s complement form of given input and perform addition on them