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23 September, 02:47

Substitute 7x+2y = - 14, x+y = 8

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  1. 23 September, 03:23
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    From second equation y = 8 - x so

    7x + 2 (8 - x) = - 14

    5x = - 14 - 16 = - 30

    x = - 6

    and y = 8 - - 6 = 14

    Answer x=-6, y=14
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