2. How to Add and Subtract Unlike Denominators

3. Part 1: Addition with Unlike Denominators

5. Part 2: Subtraction with Unlike Denominators

7. Part 3: Using Least Common Multiples To find the LCM of two or more algebraic expressions, 1.Factor each expression. 2.Form the product using each factor the greatest number of times it occurs.

9. Citations 1.I found the rule for adding rational expressions with unlike denominators in page 445 in the Algebra 1 textbook. 2.Question number one was in page 445 in the Algebra 1 textbook. 3.I found the rule for subtracting rational expressions with unlike denominators in page 445 in the Algebra 1 textbook. 4.Question number two was in page 446 in the Algebra 1 textbook. 5.I found the rule for LCM in page 446 in the Algebra 1 textbook. 6.Question number 3 was in page 447 in the Algebra 1 textbook.

10. Thanks For Watching! Math is Very Fun to Do!