Arithmetic Series Sum Formula Quizmaster
Review the Lesson | MATHguide homepage Updated June 18th, 2023

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Use the first 39 terms of the following arithmetic series for the problem below:

-2 + 1 + 4 + 7 + ...


What is the 39th term?		 a39 =
What is the sum of the first 39 terms? S39 =