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9 January, 01:24

If 5y+x=-13 and (7, k) is an element in the solution set then k equals

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  1. 9 January, 03:46
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    K=-4

    (x, y)

    7 = x

    5y + 7 = - 13

    Subtract 7 from both sides

    5y = - 20

    divide by 5

    y (or k) = - 4
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