10.5 Addition and Subtraction with unlike denominators

1. 10.5 Addition and Subtraction with unlike denominators

2. Adding Fractions with unlike denominators REVIEW:

3. Steps • Find a least common denominator (LCD) • Rename fractions • Add or subtract numerators

4. How to get a LCD with RE • Factor the denominators • Take one of each factor • If there are duplicates take the one with the highest exponent

5. Rename Fractions with LCD • Compare the LCD to the denominator of each fraction • Multiply the numerator and denominator of the fraction by a number or polynomial to make your denominator match your LCD

6. Example 1

7. Example 2:

8. Example 3:

9. Example 4:

10. Example 5:

11. Example 6:

12. Example 7 You try! Raise your hand when you are done! First person done with the correct answer will earn a math buck!$$$

14. Example 8 You try! Raise your hand when you are done! First person done with the correct answer will earn a math buck!$$$

16. Example 9 You try! Raise your hand when you are done! First person done with the correct answer will earn a math buck!$$$

18. Example 10 You try! Raise your hand when you are done! First person done with the correct answer will earn a math buck!$$$

20. Example 11 You try! Raise your hand when you are done! First person done with the correct answer will earn a math buck!$$$

22. Assignment: Page 448 (2-34) even