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3 October, 04:33

Solve this equation using elimination: 4x-y=8; 6x+y=2

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  1. 3 October, 04:59
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    Solve simultaneously.

    4x - y = 8

    6x + y = 2

    Multiply top equation by 6, and bottom equation by 4, to eliminate x, so that we can find y.

    ~

    24x - 6y = 48

    24x - 4y = 8

    Subtract top from bottom to form one equation.

    ~

    -2y = 40

    Therefore y is 20.

    Put y back in to an equation, such as 4x - y = 8.

    ~

    4x - 20 = 8

    4x = 28

    x = 7
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