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4 July, 03:38

If ax + y=23, 3x - y = 9, and x = 8, what is the value of a?

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  1. 4 July, 03:56
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    a = 1

    Step-by-step explanation:

    x = 8

    3x - y = 9

    3 (8) - y = 9

    24 - y = 9

    -y = 9 - 24

    -y = - 15

    y = 15

    ax + y = 23

    a (8) + 15 = 23

    8a = 23 - 15

    8a = 8

    a = 8/8

    a = 1
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