Lesson
4.13. Bringing fractions with different denominators to a common denominator
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4.13. Bringing fractions with different denominators to a common denominator
Adding and subtracting fractions 5.We make the tasks harder because, unlike the previous preparatory material, here we do not show the internal arithmetic structure of the denominators. You must examine the denominators and determine which of the 3 types of common-denominator methods learned previously should be applied. An additional difficulty is that after bringing to a common denominator, you must also simplify the fraction where possible.
Worked examples:
Key transformations:
1st check
Case A
Worked example A:
2nd check
Case B
B/1 worked example:
B/2 worked example:
Case C
C/1 worked example:
C/2 worked example:
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