Need some help understanding the steps of this question. :) THANKS!

Question

anonymous · Answer

$$\frac{ 4 }{ x+2 }+\frac{ 2 }{ x-4 }=\frac{ 30 }{ x^2-2x-8 }$$

marigirl · Answer

lets start from the LEFT side. see it as two fractions. 

in order to add them, we need its denominator to be the same. we can do that by multiplying the left fraction by (x-4) (top and bottom) and then multiplying the right fraction by (x+2). 

am i making sense?

anonymous · Answer

you need a common denominator.
Multiply the 1st term by (x-4)/(x-4)
Multiply the 2nd term by (x+2)/(x+2)
Simplify and reduce

anonymous · Answer

Hmm can you guys show me in a equation form? Like a drawing or something?

smored · Answer

im drawing right now

anonymous · Answer

Ok thanks

anonymous · Answer

wow I'm lagging, @marigirl your answer showed up before mine, 3 minuted after I posted mine. If that makes sense.

smored · Answer

might take a few minutes...

anonymous · Answer

its Fine :)

smored · Answer

There!

anonymous · Answer

And one more question, how do you find the common denominator? LOL

anonymous · Answer

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