If 72 is added to a number it will be 4 times as large as it was originally

Discussion in 'Calculator Requests' started by math_celebrity, May 3, 2021.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    If 72 is added to a number it will be 4 times as large as it was originally

    The phrase a number means an arbitrary variable. Let's call it x.
    x

    72 added to a number:
    x + 72

    4 times as large as it was originally means we take the original number x and multiply it by 4:
    4x

    Now, the phrase it will be means an equation, so we set x + 72 equal to 4x to get our final algebraic expression:
    x + 72 = 4x

    If the problem asks you to solve for x, we type this equation into our search engine and we get:
    x = 24
     

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