the sum of the first terms of an arithmetic sequence and the sum of the next 12th terms are equal. if its common difference is 3?
what is the 13th term of thos sequence
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the sum of the first terms of an arithmetic sequence and the sum of the next 12th terms are equal. if its common difference is 3?
what is the 13th term of thos sequence
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the sum of the first terms of an arithmetic sequence
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