I tried but it give wrong answer in -3 minus -1 and -1 minus -3The basic circuits are called a Half-Adder and a FullAdder.
The Half-Adder takes two input bits and produces a sum and a carry. So it is a Boolean function with two inputs and two outputs.
The Full-Adder takes three inputs, a carry in and two input bits. It produces a sum and a carry. So it is a Boolean function with three inputs and two outputs.
Once you have those the rest is don with input multiplexers.
Show me.I tried but it give wrong answer in -3 minus -1 and -1 minus -3
Sorry ,I don't have laptop nowShow me.