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6 February, 06:24

Find the solution to the system 9x-4y=-13 and 9x-2y=-20

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  1. 6 February, 08:39
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    x = - 3, y = - 3.5. As an ordered pair it is (-3, - 3.5).

    Step-by-step explanation:

    9x - 4y = - 13

    9x - 2y = - 20

    Subtract:-

    -2y = 7

    y = - 3.5.

    Substitute for y in the first equation:

    9x - 4 (-3.5) = - 13

    9x = - 27

    x = - 3.
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