If 18 a b, -3 e are in AP the a + b the equal to

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If 18 a b, -3 e are in AP the a + b the equal to

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Sadie 1 month 2021-08-16T12:51:00+00:00 1 Answer 0 views 0

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    2021-08-16T12:52:58+00:00

    Answer:

    ANSWER IS 15

    Step-by-step explanation:

    tn = a + (n-1)d

    t4 = 18 + 3d = – 3

    3d = – 21

    d = – 7

    So, the AP is 18, 11, 4, – 3, – 10

    So, a + b = 11 + 4 = 15

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