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15 October, 15:45

Use addition to solve the linear system of equations. Include all of your work in your final answer.

x - y = 4 x + 2y = 4

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  1. 15 October, 16:23
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    (x - y = 4) * (-1)

    x + 2y = 4

    -x+y=-4

    x + 2y = 4

    3y = 0

    y = 0

    x-y = 4

    x-0=4

    x=4

    x=4, y=0
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