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2014-03-31T06:57:06+03:00
X(1+3+5+.....+2007) - x(2+4+6+...+2006) = 26*94;
x( 1-2 + 3-4 + 5-6 +....+ 2005-2006 + 2007) = 26*94
x( -1003 + 2007) = 2444
x*1004 = 2444
x = 2444/1004 
x = 2.43
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