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Math Help - Solving Inequalities

  1. #1
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    Solving Inequalities

    Solve the inequalities. Please explain how to do this.
    I know that you have to do two equalities or something. I don't remember. Please help!

    |2x-5| > or = 57

    |-15x+73| < 122
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  2. #2
    Member rowe's Avatar
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    Recall that |2x-5| \geq 57 is the same as 2x-5 \geq 57 and 2x-5 \leq -57, so you have two parts to solve.

    2x-5 \geq 57 = 2x \geq 62 = x \geq 31

    Now with this in mind, try the others.
    Last edited by rowe; October 8th 2009 at 02:09 AM.
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  3. #3
    MHF Contributor
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    Quote Originally Posted by EyesThatSparkle02 View Post
    Solve the inequalities. Please explain how to do this. I know that you have to do two equalities or something. I don't remember.
    To re-learn how to solve absolute-value inequalities, try here.

    (For the first one, you'll be doing two separate inequalities; for the second one, you'll be doing one inequality in three "halves".)
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