# solve m/3n + 2/7n , I know the answer is 7n+6/21n

Dec 27th, 2014
Anonymous
Category:
Mathematics
Price: \$5 USD

Question description

How to solve m/3n + 2/7n , I know the answer is 7n+6/21n but How did you get there? the app im using only says "cross multiply" to which iam getting 7nm+6n/21n^2.

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