SOLUTION: I am having trouble with understanding how these problems are worked out. what do I do first, step by step. factor first or after? just really confused. {{{4a/(5a-10) - 3a/(10a-2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am having trouble with understanding how these problems are worked out. what do I do first, step by step. factor first or after? just really confused. {{{4a/(5a-10) - 3a/(10a-2      Log On


   



Question 31732: I am having trouble with understanding how these problems are worked out. what do I do first, step by step. factor first or after? just really confused.
4a%2F%285a-10%29+-+3a%2F%2810a-20%29
Thank you,
CARMA:)
p.s it is 4a over the 5a and vice vera.

Answer by mbarugel(146) About Me  (Show Source):
You can put this solution on YOUR website!
Hello!
What you should do here is is take 1%2F%285a-10%29 as common factor. Notice that 10a-20 is simply 2%285a-10%29. Therefore, you would get the expression:
%281%2F%285a-10%29%29%284a+-+%283a%29%2F2%29
Doing the subtraction in the second term, we get:
%281%2F%285a-10%29%29%28%285%2F2%29a%29
So the final answer would be:
+%285a%29%2F%2810a-20%29

I hope this helps!
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