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Can someone tell me how to do it, i have more problems like this​

Can someone tell me how to do it, i have more problems like this​-example-1
User Anneliese
by
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1 Answer

4 votes

Answer:


\large\boxed{(7n)/(30)=(7)/(30)n}

Explanation:


(2n)/(5)+\left(-(n)/(6)\right)=(2n)/(5)-(n)/(6)

To subtract both fractions we need a common denominator.


LCD=(5)(6)=30


(2n)/(5)=(2n\cdot6)/(5\cdot6)=(12n)/(30)\\\\(n)/(6)=(n\cdot5)/(6\cdot5)=(5n)/(30)

Therfore


(2n)/(5)-(n)/(6)=(12n)/(30)-(5n)/(30)=(12n-5n)/(30)=(7n)/(30)=(7)/(30)n

User Grigb
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6.2k points