lesson
Adding Fractions With Different Denominators
Add fractions with unlike denominators by replacing them with equivalent fractions.

Add fractions with unlike denominators by replacing them with equivalent fractions.
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9 lessons
Add and subtract fractions and mixed numbers with unlike denominators using equivalent fractions, visual models, and regrouping.
Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)