Help simplifying complex fractions

[ChrisFlory]

I need some help Simplifying Complex Fractions. Here are some of the questions:

http://learn.flvs.net/webdav/educator_algebra2_v5/Module6/ImagMod6/M6_07_10.gif

http://learn.flvs.net/webdav/educator_algebra2_v5/Module6/ImagMod6/M6_07_11.gif

http://learn.flvs.net/webdav/educator_algebra2_v5/Module6/ImagMod6/M6_07_12.gif

http://learn.flvs.net/webdav/educator_algebra2_v5/Module6/ImagMod6/M6_07_14.gif

I've been struggling with this for awhile, can any help me?

Thanks for any and all help! :)

 

[TD]

What have you attempted so far? You can do the first step using:

$$\frac{{\frac{a}{b}}}{{\frac{c}{d}}} = <br /> \frac{a}{b} \cdot \frac{d}{c}$$

That is: a fraction of two fractions is the same as the product of the top fraction with the inverse of the bottom fraction.

Give it a shot

 

[suspenc3]

why can't i see the fractions?

 

[Hootenanny]

why can't i see the fractions?

They keep disappearing for me too.

 

[Hubert]

Also,

$$\frac{{\frac{a}{c}}}{{\frac{b}{c}}} = <br /> \frac{a}{b}$$

(A very useful version of what TD supplied earlier.)

If you remember to make common denominators before combining fractions, and remember how to factor the difference of perfect squares, you should be all set.

 

[HallsofIvy]

The fractions have been posted as "gif"s which can take "forever" to load. Much better to use LaTex.