1/ 5-(1997-2005)+1997 2/4567+(1234-4567)-4 3/1579-(53+1579)-(-53) 4/13579-(14-53)+(13579) 5/2001-15+54-2001-54 6/14537-4+(5-14537) 7/6-(5-5847)+5-5847 8/35-17+1993-35-1993 9/-48725-(357-48725)+300 10/3579-(49-5+3579)+49

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