Thursday, March 02, 2023

can you solve it?

This took me only a few seconds:





1 comment:

  1. My solution was slightly different but took the same amount of time:

    Start with
    1 / [1 - (1/x)] = 1 + 1/3

    Immediately, you see that
    1 + 1/3 = 4/3

    Multiply the left side by 4/4 to get:
    4 / [4 - (4/x)] = 4/3

    So, in comparing numerators, we can see that
    4 = 4

    Which means that, for the denominators,
    4 - (4/x) = 3

    There are a number of ways to go from here. I multiplied both sides by x to get rid of x in the denominator:
    4x - 4 = 3x

    Then just solve for x:
    x = 4

    QED.

    ReplyDelete

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