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6 September, 00:20

Linear equations substitution

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  1. 6 September, 00:45
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    For example, y=x+4 and y=5x+2.

    That would mean that x+4=y=5x+2.

    Simplify it to x+4=5x+2.

    x=5x-2

    -4x=-2

    x=1/2.

    Now, plug x into one of the equations.

    y=x+4

    y=1/2+4

    y=9/2.

    Therefore, the POI is (1/2,9/2).
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