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18 February, 02:53

Solution to 5x+y=-8 and 4x-2y=-40

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  1. 18 February, 05:47
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    5x+y=-8 so y = - 5x - 8

    4x-2y=-40

    substitute y = - 5x - 8 into 4x-2y=-40

    4x - 2y = - 40

    4x-2 (-5x - 8) = - 40

    4x + 10x + 16 = - 40

    14x = - 56

    x = - 4

    y = - 5x - 8

    y = - 5 (-4) - 8

    y = 20 - 8

    y = 12

    answer

    x = - 4 and y = 12
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