SOLUTION: simplify x^2+7x/3x/49-x^2/3x-21

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Question 298952: simplify x^2+7x/3x/49-x^2/3x-21
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
simplify
%28x%5E2%2B7x%29%2F%283x%29
------------
%2849-x%5E2%29%2F%283x-21%29
:
Invert the dividing fraction and multiply:
%28x%5E2%2B7x%29%2F%283x%29 * %283x-21%29%2F%2849-x%5E2%29
:
factor and cancel x, (x+7), (x-7) and 3. just leaving us with one
%28x%28x%2B7%29%29%2F%283x%29 * %283%28x-7%29%29%2F%287-x%29%287%2Bx%29%29 = 1