SOLUTION: Can you help me divide a rational expression? Here is the problem: 2x-6/21 divided by 5x-15/12. I am not sure how to start out, do I need to try to factor first?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Can you help me divide a rational expression? Here is the problem: 2x-6/21 divided by 5x-15/12. I am not sure how to start out, do I need to try to factor first?      Log On


   

Question 56111: Can you help me divide a rational expression? Here is the problem:
2x-6/21 divided by 5x-15/12. I am not sure how to start out, do I need to try to factor first?
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
%282x-6%29%2F21 divided by %285x-15%29%2F12 First flip the second rational expression and multiply:
%28%282x-6%29%2F21%29%2A%2812%2F%285x-15%29%29 Factor
%282%28x-3%29%2F%283%2A7%29%29%2A%28%282%2A2%2A3%29%2F%285%28x-3%29%29%29 Cancel the numerators and denominators that match.

%282%2F7%29%2A%282%2A2%2F5%29
highlight%288%2F35%29
Happy Calculating!!!