Unit 7 Module B.pdf - Unit 7 \u2013 Rational Expressions and Equations Module 7B Sections 20.4 \u2013 20.7 7B Adding Rational Expressions Adding Rational

# Unit 7 Module B.pdf - Unit 7 – Rational Expressions and...

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Unit 7 Rational Expressions and Equations Module 7B Sections 20.4 20.7 7B Adding Rational Expressions Adding Rational Expressions with Like Denominators 2 To add when the denominators are the same, add the numerators and keep the same denominator. Then simplify if possible.  7B Adding Rational Expressions Adding Rational Expressions with Different Denominators 4 To add rational expressions with different denominators: 1. Find the LCM of the denominators. This is the least common denominator (LCD). 2. For each rational expression, find an expression equivalent to it whose denominator is the LCD. Multiply by 1 using an expression for 1 made up of factors of the LCD that are missing from the original denominator. 3. Add the numerators. Write the sum over the LCD. 4. Simplify if possible.    7B Adding Rational Expressions Add rational expressions. Example 3 Solution Continued 8 7B Adding Rational Expressions Add rational expressions. Example 3 Solution Continued 9      #### You've reached the end of your free preview.

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