The sum of 1st and 17th terms of an arithmetic sequence is 40. The sum of its 1st and 18th terms is 43. What is its common difference

Question

The sum of 1st and 17th terms of an arithmetic sequence is 40. The sum of its 1st and 18th terms is 43.
What is its common difference

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Josie 2 months 2021-09-25T06:39:15+00:00 2 Answers 0 views 0

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    0
    2021-09-25T06:40:53+00:00

    Step-by-step explanation:

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    0
    2021-09-25T06:41:05+00:00

    Answer:

    not clear……………..

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