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2 March, 06:02

Solve by substitution 3y-2x=10 and x=9-2y

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  1. 2 March, 06:21
    0
    3y-2 (9-2y) = 10

    3y-18+4y=10

    -y-18=10

    -y=28

    y=-28

    3 (-28) - 2x=10

    -84-2x=10

    -2x=94

    x=-47

    so x is - 47 and y is - 28
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