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How to Add and Subtract Unlike Denominators

How to Add and Subtract Unlike Denominators. +. Part 1: Addition with Unlike Denominators . The pattern…… = …..is useful for adding rational expressions with different denominators. Question One:. Step one: Use the pattern for adding rational expressions-

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How to Add and Subtract Unlike Denominators

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  1. How to Add and Subtract Unlike Denominators +

  2. Part 1: Addition with Unlike Denominators The pattern…… = …..is useful for adding rational expressions with different denominators.

  3. Question One: • Step one: Use the pattern for adding rational expressions- • Step two: Factor to look for common factors - • Step Three: Simplify- • You Are Done!

  4. Part 2: Subtraction with Unlike Denominators To subtract expressions with unlike denominators, use the pattern……. -

  5. Question Two: • Step one: Use the pattern for subtracting rational expressions- • Step two: • Step three: • Step four: • Step five: • Answer:

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

  7. Question 3: Find the LCM of 8 and -12x 8=2*2*2*x*x*y*y -12x= -2*2*3*x*y*y*y LCM= 2*2*2*3*x*x*y*y*y =24

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

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

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