Algebra 1

solve the inequality -3n<81

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  1. divide by -3:

    n > -27

    Note that multiplying by a negative value changes the direction of the inequality. It's just shorthand for moving things to the other side:

    -3n < 81

    add 3n:
    0 < 3n+81

    subtract 81:
    -81 < 3n

    divide by 3:
    -27 < n

    which is the same as n > -27

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    posted by Steve
  2. mainly what you are trying to do is get the n by itself.

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