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20 December, 14:34

Solve the following system of equations by linear combination: 5x 2y = 14 y = x - 7

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  1. 20 December, 15:32
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    I would use subsitution

    y=x-7

    sub x-7 for every x

    5x+2 (x-7) = 14

    5x+2x-14=14

    add 14 to both sides

    7x=28

    divide both sides by 7

    x=4

    sub

    y=x-7

    y=4-7

    y=-3

    x=4

    y=-3

    (4,-3)
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