Posted by **Ellen** on Monday, October 8, 2007 at 7:29pm.

If negative 20 equals 168, negative 15 equals 153, negative 10 equals 138, negative 5 equals 123, 0 equals 108, 5 equals 93, 10 equals 78, 15 equals 63, 20 equals 48, then what is the rule???

Also, what is the pattern in the informatio above???

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