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2/3-1/5 unlike denominators

User XmlParser
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1 Answer

6 votes

Answer:

7/15

Explanation:

1. In order to subtract fractions with unlike denominators, you first need to find a common denominator.

The denominators 3 and 5 share a common factor of 15. In order to convert 2/3, multiply the fraction by 5/5 (whatever you do to the top, you must also do to the bottom). You multiply the bottom by 5 because 3 times 5 is 15.

Next, to convert 1/5 into a fraction with a denominator of 15, you must multiply the fraction by 3/3, because 5 times 3 is 15.

You should end up with 10/15 and 3/15.

2. Subtract the numerators.

10-3=7

3. Write the answer as 7/15.

User Grantly
by
8.1k points

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