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Math Help - Easy Algebra Question

  1. #1
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    Easy Algebra Question

    Well it shames me to say, I thin I am having an off day, but I can't for the life of me remember how to do this simple operation.

    Here is the question:

    3/x 4/5

    The problem I am having is I cannot solve for x.

    The answer to 3/x is 3/4.

    Help would be appreciated.
    Last edited by MathDumb; December 20th 2012 at 06:39 PM.
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  2. #2
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    Re: Easy Algebra Question

    Quote Originally Posted by MathDumb View Post
    Well it shames me to say, I thin I am having an off day, but I can't for the life of me remember how to do this simple operat

    Here is the question:

    3/x 4/5

    The problem I am having is I cannot solve for x.

    The answer to 3/x is 3/4.

    Help would be appreciated.
    when dividing by a fractionyou multiply by its reciprocal

    3/x*5/4 =3/4
    cross multiply 60=12x x=5
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  3. #3
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    Re: Easy Algebra Question

    ANS:- 3/x 4/5 = 3/4 -> 3/x * 5/4 = 3/4

    15*4/ 4*3 = 15/4 = 3x/4

    15/4x = 3/4x

    60/12 = 5x

    Please show your thinking of this subject What is an Expression in Algebra and key term and key term by writing.
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  4. #4
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    Re: Easy Algebra Question

    OP shows an algebraic expression equal to nothing, X cannot be determined without an equality.I show an example where this expression equals 3/4.
    (3/X) *(5/4) =3/4
    X=5
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