1. 10.5 Addition and Subtraction with unlike denominators
Steps:
Find a least common denominator (LCD)
Rename fractions
Add or subtract numerators

2. REVIEW:

3. 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

4. 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

5. Example 1

6. Example 2:

7. Example 3:

8. Example 4:

9. Example 5:

10. Example 6:

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

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

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

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

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

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