a+a+5d=2
2a+5d=2 ------- 1
a+d\a+3d=-1
a-3d=a+d-
2a+4d=0
a+2d=0 -2
2a-4d=0-------2
d=2
a=-4
; 11-01-2012 11:22 PM
a+3d+a+4d+a+5d=12
3a+12d=12
a+4d=4 -------1
a+a+2d+a+5d=2
3a+7d=2 -----------2
a=4
d=-2\3
+
64 = 1 = 127
; 11-05-2012 11:12 PM
= 7
/
; 11-05-2012 11:18 PM
: 1 (0 1 )
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