Answers

2016-06-30T19:16:23+08:00
An=a1+(n-1)d
2=16+(8-1)d
2=16+7d
2-16=7d
-14=7d
Divide both sides by 7.
-2=d

-2 is the common difference, so

16,14,12,10,8,6,4,2
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