Answer:
.
Explanation:
To go from the first term of this sequence to the second term , add to .
To go from the first term of this sequence to the third term , add to .
In general, going from the first term of an arithmetic sequence to the th term, add to .
Thus, given an arithmetic sequence with as the first term and as the common difference, the th term of this sequence would be .
In this question, and for this arithmetic sequence. The th term of this sequence would be:
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