10.4 Addition and Subtraction: Like Denominators - PowerPoint PPT Presentation

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10.4 Addition and Subtraction: Like Denominators

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To add and subtract rational expressions with like ... (just like adding like ... Example 1 Example 2 Example 3 Subtracting Rational Expressions ... – PowerPoint PPT presentation

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Title: 10.4 Addition and Subtraction: Like Denominators


1
10.4 Addition and Subtraction Like Denominators
  • Goal to add or subtract the numerators of
    fractions with like denominators and then simplify

2
To add and subtract rational expressions with
like denominators
  • Keep the denominator and add or subtract the
    numerators (just like adding like terms)
  • Remember to simplify your final answer

3
Add Subtract Rational Expressions
REVIEW
4
Example 1
3x2
4x
-15
5
Example 2
6
Example 3
x 4
7
Subtracting Rational Expressions (RE)
  • When you subtract a RE remember to distribute the
    minus sign to the numerator of the 2nd RE

8
REVIEW
9
Example 4
( )
2
10
Example 5
11
Example 6
12
You try example 7
13
AssignmentPage 4432-32 even
Answer must be factored
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