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by Anonymous on November 4th, 2008

Anonymous

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Please help me with these : Solving inequalities: 3 < 2x +1 ≤ 9, -13<3x+5≤26, 12≤-4y+8<16, -5≥x+2≥-7, -5 ≤ 2 - x ≤ 7

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Answers. 2 helpful answers below.

  • by Imamodel_F on September 13th, 2011

    Imamodel_F

    3(x+4)-12>-2(x-3)+19

    No comments. Post one | Permalink

  • by krazymike on November 18th, 2008

    krazymike

    3 < 2x + 1 ≤ 9
    2 < 2x ≤ 8
    1 < x ≤ 4

    -13 < 3x + 5 ≤ 26
    -18 < 3x ≤ 21
    -6 < x ≤ 7

    12 ≤ -4y + 8 < 16
    4 ≤ -4y < 8
    -1 ≥ y > -2 !!!Change the sign by multiplication and you need to switch the direction of the <, >, ≥, ≤!!!

    (> becomes <, < becomes >, ≥ becomes ≤, ≤ becomes ≥)

    -5 ≥ x + 2 ≥ -7
    -7 ≥ x ≥ -9

    -5 ≤ 2 - x ≤ 7
    -7 ≤ -x ≤ 5
    7 ≥ x ≥ -5

    No comments. Post one | Permalink

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You're reading Please help me with these : Solving inequalities: 3 < 2x +1 ≤ 9, -13<3x+5≤26, 12≤-4y+8<16, -5≥x+2≥-7, -5 ≤ 2 - x ≤ 7 - which can also be phrased in the following ways:

  • Please help me with these : Solving inequalities: 3 < 2x +1 ≤ 9, -13<3x+5≤26, 12≤-4y+8<16, -5≥x+2≥-7, -5 ≤ 2 - x ≤ 7

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