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

REVIEW:

How to get a LCD with RE Factor the denominators Take one of each factor Even if both addends don’t have the same factor If the addends have the same factor just take one and take the one with the highest exponent Example:

Rename Fractions with LCD Compare the LCD to the denominator of each addend Multiply the numerator and denominator of the fraction by a number or polynomial to make your denominator match your LCD Example: 5(x + 1) 3(x - 1)

Add numerators: 3(x - 1) 5(x + 1)

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

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

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

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

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

Assignment: Page 448 (2-34) even