Question: Given two 4-bit inputs x and y, draw a circuit that output the value z such that z = x + x + y. As

Given two 4-bit inputs x and y, draw a circuit that output the value z such that z = x + x + y. As a special property of this circuit only, we do not want overflow, so we have decided that z may have more than 4 bits to represent its value. Draw the corresponding circuit; label the output bits of z and state the number of bits needed in the output.

I feel like I have an idea of what this is asking, but I don't exactly know where to start.

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