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 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 September 28th, 2019, 02:57 AM #1 Newbie   Joined: Sep 2019 From: ireland Posts: 3 Thanks: 0 pls help 3n+21/n+3 is given.show all the possible values so that n is a natural number and the final poduct of the equation is also a natural number
 September 28th, 2019, 04:34 AM #2 Senior Member   Joined: Jun 2014 From: USA Posts: 620 Thanks: 52 Does $\frac{3n+21}{n+3} = \frac{n+7}{\frac{n}{3}+1}$? If so, I think that means $n$ must always be divisible by 3, correct? Maybe not...? We might also notice that $\frac{n+7}{n+3}$ must be a natural number, correct? Do either of these things help? What have you tried so far? Thanks from topsquark
September 28th, 2019, 08:31 AM   #3
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Quote:
 Originally Posted by conor mcgregor 3n+21/n+3
Parentheses would also be nice. I am (reasonably) guessing that you want the form (3n + 21)/(n + 3). Details are important.

-Dan

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