the sum of any 3 consecutive terms of an arithmetic sequence is = times the middle term ​

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the sum of any 3 consecutive terms of an arithmetic sequence is ………… times the middle term

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Faith 1 month 2021-08-20T05:44:09+00:00 1 Answer 2 views 0

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    2021-08-20T05:45:37+00:00

    the sum of any 3 consecutive terms of an arithmetic sequence is ……3…… times the middle term

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18:9+8+9*3-7:3-1*13 = ? ( )