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(c) (2 points) 9’s complement. Find 9’s complement of the decimal number 2770. Ans: 7229 (d) (3 points) Decimal arithmetic. Use 10’s complement to perform the decimal subtraction below. You must show all your steps, answer alone will not be given any credit. 4579 - 1220. Ans: 4579 + 8780 = 13359 . Carry out is dropped and the result is 3359 ................
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