-47

|-47| = 32+8+4+2+1 = 101111(2)

1의 보수

010000 = 16

2의 보수

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010001 = 17


-47에 17을 더하면 30이 되는데 이게 왜 2의 보수죠? 

제가 잘못 계산한건가요 ㅠㅠ