Find the first three terms of the arithmetic series described. n=15, a_n=4/5, S_n=45

Question

Find the first three terms of the arithmetic series described.

n=15, a_n=4/5, S_n=45

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Thạch Thảo 3 months 2021-07-19T22:22:58+00:00 1 Answers 0 views 0

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    2021-07-19T22:24:44+00:00

    Answer:

    Step-by-step explanation:

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )