|(x-7)/5|<=4

Discussion in 'Calculator Requests' started by math_celebrity, May 23, 2017.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    |(x-7)/5|<=4

    Set up two equations:
    1. (x-7)/5 <= 4
    2. (x-7)/5 > -4
    Cross Multiply (1):
    x - 7 <= 20

    Add 7 to each side:
    x <= 27

    Cross Multiply (2):
    x - 7 > -20

    Add 7 to each side:
    x > -13
     

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