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Math - Fractions with Different Denominators











































1/3 + 5/15

Before these fractions can be added, they must have a common denominator.

Generally, you can find the lowest common denominator by factoring each denominator into its prime factors, and then multiplying the larger power of each factor found in both denominators.

Comments for Math - Fractions with Different Denominators

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May 05, 2011
Math - Fractions with Different Denominators
by: Staff


The question:

1/3 + 5/15


The answer:


1/3 + 5/15

To add these fractions, they must have a common denominator

Factor the second fraction

1/3 + (5)/(3*5)

Cancel the factors in the numerator and denominator which are equal

1/3 + (5/5)*(1/3)

1/3 + 1*(1/3)

1/3 + (1/3)

1/3 + 1/3

Both fractions can now be added because they each have the same denominator

(1+1)/3

(2)/3

2/3


The final answer is: 2/3





Thanks for writing.


Staff
www.solving-math-problems.com



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