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9 October, 14:36

3x-5y+6z=4 x-3y+5z=-5 2x-4y+z=13

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  1. 9 October, 14:56
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    3x-5y+6z=4

    -3x+9y-15z=15

    4y-9z=19

    -2x+6y-10z=10

    2x - 4y + z = 13

    2y-9z=23

    4y-9z=19

    -2y+9z=-23

    2y=-4

    y=-2

    3x+10+6z=4

    x - 6 + 5z=-11

    3x+6z=-6

    x + 5z=-5

    3x+6z=-6

    -3x-15z=33

    -9z=27

    z=-3

    x+6-15=-5

    x-9=-5

    x=4
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