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20 August, 19:48

2x + 6y = 17

2x + 10y = 9

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Answers (1)
  1. 20 August, 22:52
    0
    2x+6y=17

    2x+10y=9

    -4y=8

    divide - 4 on each side.

    y=-2

    2x+10 (-2) = 9

    2x-20=9

    add 20 on each side of the equal sign

    2x=29

    divide 2 on each side

    x=14.5

    check:

    2 (14.5) + 10 (-2) = 9
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