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22 April, 19:23

2x - y = - 1

3x + 5y = 18

What are the order pairs to these equations.

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  1. 22 April, 20:04
    0
    2x - y = - 1 (1)

    3x + 5y = 18 (2)

    => 6x - 3y = - 3

    6x + 10y = 36

    => - 13y = - 39 = > y = 3

    Substitute y into the equation (1)

    2x - 3 = - 1 = > 2x = 2 = > x=1

    so the oder pairs to these equations is : { 1:3 }
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