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26 December, 19:14

Solve the following equations. express your answer as an ordered pear in the format (a, b) with no spaces between the numbers or symbols.

2x + 7y=4

-4x-3y=14

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  1. 26 December, 19:37
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    2x + 7y = 4 (1)

    -4x - 3y = 14 (2)

    => 4x + 14y = 8

    -4x - 3y = 14

    => 11y = 22 = > y = 2

    Subtitute y into the equation (1)

    2x + 14 = 4

    => x = - 5

    So {x; y} = { - 5; 2 }
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