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2013-04-18T20:09:16+02:00

38) E= -28 + 32 - 25 + 28 - 32 = 60 -85

                                                = -25

F= + 125 - 73 + 40 + 73 - 125 = 40

 

 

31) A G

      B H

      CE

       DF