SOLUTION: 9-(9-(9-13))

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Question 364407: 9-(9-(9-13))
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
9-(9-(9-13)) =
9 - (9-(-4)) =

9 -(9 + 4) =

9 - 13 = -4