document.write( "Question 884583: Hi, i've question about sequence. 7999, 68, 28, 20 , x ?\r
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Algebra.Com's Answer #534440 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
7999 -7931 7891 -7859
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\n" ); document.write( "-7815 could be next
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