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30 June, 18:06

Given the system of equations, what is the y-coordinate of the solution? 5x - 4y = 7 x = 5 - y

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  1. 30 June, 18:35
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    Sub x = 5 - y into 1st equation

    5 (5 - y) - 4y = 7

    25 - 5y - 4y = 7

    25 - 25 - 9y = 7 - 25

    - 9y = - 18 divide both sides by - 9

    y = 2
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