Verified Answer :

ayah1

c + (-8) + (-5) = 0
c - 8 - 5 = 0
c -13 = 0   (add 13 to each side)
  +13    +13  
   c = 13

The answer is D.

(-8) + (-5)= -13 so plug in -13 for variable c and you get -13+ -13= 0

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