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Math Help - Calculator not agreeing with text book

  1. #1
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    Exclamation Calculator not agreeing with text book

    Hi I am working from a book and I'm having a problem.

    The text below is an example from the book. When I enter this sum into my calculator exactly as shown below it says -1 not 1
    For example, 3+(−4) means that (−4) is being added to 3; this is equivalent to subtracting 4 from 3, with the result (1).
    What am I doing wrong? Is this an error in the book?
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  2. #2
    Like a stone-audioslave ADARSH's Avatar
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    you are correct

    its an error in the book
    when a greater number is substracted from a smaller one
    the result is negative
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  3. #3
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    Modulus?

    I assume there is no mention of modulus of the operation? In that case you always take the positive of the computation. If there is no mention of the modulus the answer is surely negative -1.
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