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Question

28 - (-10) + 1 = _____

A
38
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B
39
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C
19
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D
18
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Solution

The correct option is B 39
28 - (-10) + 1
= 28 + (additive inverse of -10) + 1
= 28 + 10 + 1
= 38 + 1
= 39
28 - (-10) + 1 = 39

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