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20 September, 09:47

5x + 2y = 12

- 6x - 2y = - 14

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  1. 20 September, 09:58
    0
    5x + 2y = 12

    -6x - 2y = - 14

    Add them

    -x = - 2

    x = 2

    5x + 2y = 12

    (5*2) + 2y = 12

    10 + 2y = 12

    2y = 2

    y = 1
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