Mastering Adding and Subtracting Rational Expressions Quiz
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Questions and Answers

Which of the following is the first step to add rational expressions with unlike denominators?

  • Multiply each fraction by the appropriate form of 1
  • Identify the LCD
  • Find equivalent expressions with common denominators (correct)
  • Add the numerators
  • What is the least common denominator (LCD) of the fractions $\frac{1}{3}$ and $\frac{1}{5}$?

  • 12
  • 15 (correct)
  • 8
  • 10
  • What is the result of multiplying the fraction $\frac{1}{3}$ by $5$ and $\frac{1}{5}$ by $3$?

  • $\frac{1}{15}$ and $\frac{1}{8}$
  • $\frac{5}{3}$ and $\frac{3}{5}$
  • $\frac{5}{15}$ and $\frac{3}{15}$ (correct)
  • $\frac{15}{5}$ and $\frac{15}{3}$
  • What is the final step to add rational expressions with unlike denominators?

    <p>Add the numerators</p> Signup and view all the answers

    What are the equivalent fractions with a common denominator for $\frac{1}{3}$ and $\frac{1}{5}$?

    <p>$\frac{5}{15}$ and $\frac{3}{15}$</p> Signup and view all the answers

    Which of the following is the least common denominator (LCD) for the fractions $\frac{1},{3}$ and $\frac{1},{5}$?

    <p>15</p> Signup and view all the answers

    To add rational expressions with unlike denominators, what should you first find?

    <p>Equivalent expressions with common denominators</p> Signup and view all the answers

    What is the result of multiplying the fraction $\frac{1},{3}$ by $5$ and $\frac{1},{5}$ by $3$?

    <p>$\frac{5},{15}$ and $\frac{3},{15}$</p> Signup and view all the answers

    What are the equivalent fractions with a common denominator for $\frac{1},{3}$ and $\frac{1},{5}$?

    <p>$\frac{5},{15}$ and $\frac{3},{15}$</p> Signup and view all the answers

    What is the final step to add rational expressions with unlike denominators?

    <p>Add the numerators together</p> Signup and view all the answers

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