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help with rearrange the equation to make g the subject watch

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    Hi,

    So I'm looking to rearrange the equation to make g the subject:

    2x= (g/g-2) -5

    I don't know how to work this out, can anyone help?
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    (Original post by Drax101)
    Hi,

    So I'm looking to rearrange the equation to make g the subject:

    2x= g -5 g-2

    I don't know how to work this out, can anyone help?
    What is between the 5 and second g?
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    (Original post by Drax101)
    Hi,

    So I'm looking to rearrange the equation to make g the subject:

    2x= g -5 g-2

    I don't know how to work this out, can anyone help?
    What have you tried so far? Please post your working.
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    If you need a nudge to start off, try getting all the g terms on one side and everything else on the other.

    Then get everything on one line (no fractions).
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    Ok here is my solution:

    g/g-2 = -2
    2x-5= 5-2=3x

    As stated, no idea. I appreciate your guidance.
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    (Original post by Drax101)
    Ok here is my solution:

    g/g-2 = -2
    Not sure where you're getting this from...

    Try this: \frac{g}{g-2} = 2x + 5

    Then multiply both sides by g-2, expand and then move all g terms back to the left, factorise and then divide.
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    (Original post by Drax101)
    Ok here is my solution:

    g/g-2 = -2
    2x-5= 5-2=3x

    As stated, no idea. I appreciate your guidance.
    How did you get two equations when you start with one? What is your working here?

    Try adding 5 to each side of the equation to begin.
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    g=(4x+10)/(2x+4)
    This is what I ended up with


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    (Original post by H.b9)
    g=(4x+10)/(2x+4)
    This is what I ended up with


    Posted from TSR Mobile
    Correct, but you can simplify by dividing numerator and denominator by 2.
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    (Original post by chazwomaq)
    Correct, but you can simplify by dividing numerator and denominator by 2.
    Not the OP.
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    (Original post by Zacken)
    Not the OP.
    Sure, still almost correct though! Hopefully the OP isn't still puzzling her way through the question.
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    (Original post by Drax101)
    Hi,

    So I'm looking to rearrange the equation to make g the subject:

    2x= (g/g-2) -5

    I don't know how to work this out, can anyone help?
    g/g-2 = 2x+5 -> g=(2x+5)(g-2)=2xg-4x+5g-10
    Thus (2x+5-1)g=4x+10 -> g = (4x+10)/(2x+4)=(2x+5)/(x+2)
 
 
 
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