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Math Help - I hate fractions..

  1. #1
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    I hate fractions..

    Someone help me with this question..

    What is the value of x in the equation? x/2x+1=4/3

    How would i start off?

    and btw how do i do a fraction sign on this site?
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  2. #2
    GAMMA Mathematics
    colby2152's Avatar
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    Quote Originally Posted by eh501 View Post
    Someone help me with this question..

    What is the value of x in the equation? x/2x+1=4/3

    How would i start off?

    and btw how do i do a fraction sign on this site?
    I think all of us have hated fractions once upon a time...

    \frac{x}{2x+1}=\frac{4}{3}

    Multiply each side by the denominators:

    3x=8x+4

    x=\frac{-4}{5}

    Good question:

    As far as the fraction sign is concerned: x=\frac{-4}{5} is the final line of code there. This may help you: http://omega.albany.edu:8008/Symbols.html
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  3. #3
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    When you say "Multiply each side by the denominators" do you mean cross multiply? I dont know if you were taught like that.
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by eh501 View Post
    When you say "Multiply each side by the denominators" do you mean cross multiply? I dont know if you were taught like that.
    It means to multiply both sides by 3 and by 2x + 1. But you can cross multiply if you prefer.

    -Dan
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