SOLUTION: multiply and simplify: (10n + 15) multiply by (n + 1)/ 6n +9

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Question 401633: multiply and simplify: (10n + 15) multiply by (n + 1)/ 6n +9
Answer by mananth(16946) About Me  (Show Source):
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multiply and simplify: (10n + 15) multiply by (n + 1)/ 6n +9
+%2810n+%2B+15%29+%2A+%28n+%2B+1%29%2F+%286n+%2B9%29
...
%285%28cross%282n%2B3%29%29%2A%28n%2B1%29%29%2F%283%28cross%282n%2B3%29%29%29
...
5%28n%2B1%29%2F3