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19 September, 06:45

Solve and verify each of the following systems of linear equations 4y=3x+7 and 9x+4y-139=0

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  1. 19 September, 10:04
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    Rearranging the first equation:-

    3x - 4y = - 7

    9x + 4y = 139

    12x = 132

    x = 132/12 = 11

    Substituting fro x in the second equation:-

    9 (11) + 4y = 139

    4y = 139 - 99 = 40

    y = 40/4 = 10

    Answer x = 4, y = 10.
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