maths question

  1. ciggys
    2,798 Posts.
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    09/04/12
    17:34
    Post #: 9956241
    My question relates to empty sets


    The above equation has me stumped, is it a empty set?? and does anyone know how to solve it to get the 77,050.39 psi??

    If so can you please show working

    Thanks in advance
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