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21 August, 08:09

Using the linear combination method, what is the solution to the system of linear equations 7 x minus 2 y = negative 20 and 9 x + 4 y = negative 6? (-3, 2) (-2, 3) (2, - 3) (3, - 2)

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  1. 21 August, 09:38
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    (-2, 3)

    Step-by-step explanation:

    (7x-2y = - 20) 2

    9x+4y-6

    14x-4y=-40

    9x+4y-6

    23x = - 46

    x = - 2

    9 (-2) + 4y = - 6

    -18+4y = - 6

    4y = - 6+18

    4y=12

    y=3

    so, (-2,3)
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