Fill in the blanks to make the following statements true:

Fill in the blanks to make the following statements true:

  1. (-5) + (-8) = (+8) + (……)
  2. -53 + …… = -53.
  3. 17 + …… = 0
  4. [13 + (-12)] + (…… ) = 13 + [(-12) + (- 7)]
  5. (- 4) + [15 + (- 3)] = [(-4) + 15] + …….

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