计算二进制数的加减法:(1)110(2)+111(2);(2)1001(2)-111(2);(3)1010(2)+1101(2)+11
计算二进制数的加减法:
(1)110(2)+111(2);
(2)1001(2)-111(2);
(3)1010(2)+1101(2)+1111(2).
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