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5 December, 00:32

Which expression is equivalent to 13 - (-21) ?

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Answers (2)
  1. 5 December, 00:36
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    Step-by-step explanation:

    13 + 21 = 34
  2. 5 December, 00:52
    0
    13 + 21 = 34

    Step-by-step explanation:

    Two like signs become a positive sign, therefore minus a negative number become a plus.
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