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Thread: Find x

  1. October 23rd 2008, 12:16 PM #1
    magentarita
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    Find x

    Find x so that 2x, 3x + 2 and 5x + 3 are consecutive terms of an arithmetic sequence.
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  2. October 23rd 2008, 12:19 PM #2
    masters
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    Quote Originally Posted by magentarita View Post
    Find x so that 2x, 3x + 2 and 5x + 3 are consecutive terms of an arithmetic sequence.
    In an aritmetic sequence, there must be a 'common difference' between consecutive terms. So...

    (3x+2)-(2x)=(5x+3)-(3x+2)

    Solve for x.
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  3. October 23rd 2008, 05:41 PM #3
    magentarita
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    I got it...

    Quote Originally Posted by masters View Post
    In an aritmetic sequence, there must be a 'common difference' between consecutive terms. So...

    (3x+2)-(2x)=(5x+3)-(3x+2)

    Solve for x.
    I can now solve for x.

    Thank you. I had no idea it was that simple to set up the equation.
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