SOLUTION: Multiplying rational expressions, please help me simplify the expression: 5x+15 over 3x divided by x+3 over 9x

Question 197119: Multiplying rational expressions, please help me simplify the expression:
5x+15 over 3x divided by x+3 over 9x

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
simplify the expression:
5x+15 over 3x divided by x+3 over 9x
-----------------
Invert the denominator and multiply to get:
[5x+15]/[3x] * [9x/(x+3)]
-----------------------
Factor where you can:
[5(x+3)]/[3x] * [9x/(x+3)]
------------
Cancel factors common to a numerator and a denominator to get
such as 3, x, (x+3):
---
[5/1] / [3/1]
---
= 15
------------------------
Cheers,
Stan H.

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