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4 March, 06:54

System of equations 12x-5y=-20 y=x+4

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  1. 4 March, 07:17
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    12x-5 (x+4) = -20

    12x-5x-20=-20

    12x-5x=-20+20

    7x=0

    X=0

    Y=0+4=4
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