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21 September, 21:00

What's The elimination 7x+4y=-4 5x+8y=28

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  1. 21 September, 23:06
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    7x + 4y = - 4

    5x + 8y = 28

    II - 2*I

    - 9·x = 36 - -> x = - 4

    7 * (-4) + 4y = - 4 - -> y = 6
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