Asked by Anonymous
sum of 3 consecutive integers, n=middle integer of 3
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Answered by
bobpursley
n-1 + n + n+1=?
you know n.
another way, if the middle is 3, that is the average n, so 3(average)= sum
you know n.
another way, if the middle is 3, that is the average n, so 3(average)= sum
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