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20 September, 10:40

9y=-3x-15 x+3y=-5 solve for systems of equations

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  1. 20 September, 11:53
    0
    First equation, divide both sides by 3

    3y=-x-5

    what a coincidence

    3y=-x-5

    sub into other equation

    x + (-x-5) = - 5

    x-x-5=-5

    0-5=-5

    -5=-5

    true

    there are infinite solutions

    they are the opints that lie on the line 9y=-3x-15
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