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Create a magic square (Posted on 2018-04-03) Difficulty: 2 of 5
-9, 9, -6, 6, -3, 3, 12, 15, x
Assign an integer to replace x so that the nine integers above can be arranged as a 3*3 magic square.

Rem: For conformity place the number "12" in the left corner of the top row. There are 2 complying squares .
Show both.

See The Solution Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: One way Jer2018-04-04 09:02:50
SolutionOne way Steve Herman2018-04-03 11:08:35
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