5/27/22, 3:26 AM Addition and Subtraction of Fractions with Common Denominators
Fractions:
Addition and Subtraction of Fractions with Common
Denominators
When adding and subtracting fractions, we need the denominators to be the same, and then we
can add or subtract the numerators.
0::57 1x
Video Source (04:57 mins) | Transcript
After doing the addition or subtraction, check to see if the fraction can be simplified! Find the
prime factorization of the numerator and the denominator and see if anything can cancel out.
Additional Resources
Khan Academy: Adding Fractions with Like Denominators (03:17 mins, Transcript)
Khan Academy: Subtracting Fractions with Like Denominators (02:25 mins, Transcript)
Practice Problems
Combine and simplify the following fractions:
1. 1
5
+
2
5
2. 2
7
+
4
7
3. 4
5
+
2
5
https://content.byui.edu/file/b8b83119-9acc-4a7b-bc84-efacf9043998/1/Math-1-7-4.html 1/2
Fractions:
Addition and Subtraction of Fractions with Common
Denominators
When adding and subtracting fractions, we need the denominators to be the same, and then we
can add or subtract the numerators.
0::57 1x
Video Source (04:57 mins) | Transcript
After doing the addition or subtraction, check to see if the fraction can be simplified! Find the
prime factorization of the numerator and the denominator and see if anything can cancel out.
Additional Resources
Khan Academy: Adding Fractions with Like Denominators (03:17 mins, Transcript)
Khan Academy: Subtracting Fractions with Like Denominators (02:25 mins, Transcript)
Practice Problems
Combine and simplify the following fractions:
1. 1
5
+
2
5
2. 2
7
+
4
7
3. 4
5
+
2
5
https://content.byui.edu/file/b8b83119-9acc-4a7b-bc84-efacf9043998/1/Math-1-7-4.html 1/2
