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Thread: help please

  1. #1
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    help please

    How can i simplify the following? help please

    16 1/2
    -------
    81 3/4 do i need to add the fractions then divide or flip..

    also

    12(a^3b^2c)^4
    -----------------
    4a^2c^6

    thank you
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  2. #2
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Chez_ View Post
    How can i simplify the following? help please

    16 1/2
    -------
    81 3/4 do i need to add the fractions then divide or flip..

    also

    12(a^3b^2c)^4
    -----------------
    4a^2c^6

    thank you
    $\displaystyle \frac{ 16 + \frac{1}{2} }{ 81 + \frac{3}{4} }$

    $\displaystyle = \frac{ \frac{33}{2} }{ \frac{327}{4} }$

    $\displaystyle = \frac{33}{2} \times \frac{4}{327}$

    $\displaystyle = \frac{33 \times 2}{327}$

    $\displaystyle = \frac{66}{327}$

    $\displaystyle = \frac{22}{109}$

    ------------

    $\displaystyle \frac{ 12 ( a^{3} b^{2} c ) ^{4} }{ 4 ( a^{2} c^{6} ) }$

    $\displaystyle = \frac{ 3( a^{12} b^8 c^4 ) }{ ( a^2c^6 ) }$

    $\displaystyle = \frac{ 3 a^{10} b^2 }{ c^2 }$
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  3. #3
    GAMMA Mathematics
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    Quote Originally Posted by Chez_ View Post
    How can i simplify the following? help please

    16 1/2
    -------
    81 3/4 do i need to add the fractions then divide or flip..

    also

    12(a^3b^2c)^4
    -----------------
    4a^2c^6

    thank you
    16.5 = 33/2
    81.75 = 327/4
    $\displaystyle \frac{\frac{33}{2}}{\frac{327}{4}} = \frac{33}{2}\frac{4}{327}$
    $\displaystyle =\frac{4*33}{2*327}$
    $\displaystyle =\frac{2*11}{109}$
    $\displaystyle =\frac{22}{109}$
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  4. #4
    Bar0n janvdl's Avatar
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    Quote Originally Posted by colby2152 View Post
    16.5 = 33/2
    81.75 = 327/4
    $\displaystyle \frac{\frac{33}{2}}{\frac{327}{4}} = \frac{33}{2}\frac{4}{327}$
    $\displaystyle =\frac{4*33}{2*327}$
    $\displaystyle =\frac{2*11}{109}$
    $\displaystyle =\frac{22}{109}$
    Colby use \times for $\displaystyle \times$ and \div for $\displaystyle \div$
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  5. #5
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by janvdl View Post
    Colby use \times for $\displaystyle \times$ and \div for $\displaystyle \div$
    I prefer \cdot for multiplication. Ever since I started Algebra I have hated any symbol that looks like an x but isn't the variable.

    -Dan
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  6. #6
    GAMMA Mathematics
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    Quote Originally Posted by topsquark View Post
    I prefer \cdot for multiplication. Ever since I started Algebra I have hated any symbol that looks like an x but isn't the variable.

    -Dan
    I hate the x symbols for multiplication as well. An asterisk is fairly easy to type, and it's a cross between the x and dot, so I'll stick with it for now!
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