the sum of a number times 3 and 30 is less than 17

Discussion in 'Calculator Requests' started by math_celebrity, Nov 16, 2016.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    the sum of a number times 3 and 30 is less than 17

    A number is denoted as an arbitrary variable, let's call it x.
    x

    Times 3 means we multiply x by 3:
    3x

    The sum of a number times 3 and 30 means we add 30 to 3x above
    3x + 30

    Is less than 17 means we have an inequality, so we set 3x + 30 less than 17
    3x + 30 < 17

    To solve for x and see the interval notation, use our calculator:
     

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