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30 December, 12:27

Solve the following systems of linear equations. [3x+7y = - 4 and 2x+5y = - 3]

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  1. 30 December, 12:34
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    Eliminate

    multiply first equatin by - 2

    mulitply second by 3 and add them

    -6x-14y=8

    6x+15y=-6

    add them

    y=2

    sub

    3x+7 (2) = - 4

    3x+14=-4

    minus 14

    3x=-18

    divide 3

    x=-6

    (-6,2)
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