? asked in Science & MathematicsMathematics · 9 years ago

Algebraic expression help?

half of the difference of a number and 15

4 Answers

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  • 9 years ago
    Favorite Answer

    If the number is greater than 15,

    (x - 15)/2 and if the number is

    smaller than 15, (15 - x)/2.

  • 9 years ago

    you havent really given enough information to solve this problem but ill try my best

    ill assume that you want 15 - x = x

    x would equal 7.5 as that is half of 15

  • Mike G
    Lv 7
    9 years ago

    (x-15)/2

  • 9 years ago

    ( x - 15 ) / 2

    ( x - 15 ) / 2

    = x - 15 / 2

    = 2x - 15

    = 2x = 15

    = 2x / 2 = 15 / 2

    = x = 7.5

    ( x - 15 ) / 2

    = ( 7.5 - 15 ) / 2

    = - 7.5 / 2

    = - 3.75

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