Answer :

Final answer:

In 8-bit 2's complement arithmetic, adding -76 to +25 gives us -51. This is found by converting the numbers to binary, adding them together, and then converting back to decimal.

Explanation:

In 8-bit 2's complement arithmetic, we first convert -76 and +25 into their binary representations. -76 in 2's complement form becomes 10110100 and +25 becomes 00011001. Following the rules of binary addition we add these bits together resulting in 11001101 which is the 2's complement form of -51. Hence, the result of adding -76 to +25 in 8-bit 2's complement arithmetic is -51. So, the correct answer is (b) -51.

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