SOLUTION: The rational expression 7x2y3/3rs represents the area of the rectangle, and 3xy/r represents the length. What rational expression represents the width?

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Question 890542: The rational expression 7x2y3/3rs represents the area of the rectangle, and 3xy/r represents the length. What rational expression represents the width?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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The rational expression 7x2y3/3rs represents the area of the rectangle, and 3xy/r represents the length. What rational expression represents the width?
:
We can find the width by dividing the area by the length
%28%287x%5E2y%5E3%29%29%2F%28%283rs%29%29
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%28%283xy%29%29%2Fr
Invert the dividing fraction and multiply
%28%287x%5E2y%5E3%29%29%2F%28%283rs%29%29 * r%2F%28%283xy%29%29
cancel, r and xy
%28%287xy%5E2%29%29%2F%28%283s%29%29 * 1%2F%28%283%29%29 = %28%287xy%5E2%29%29%2F%28%289s%29%29