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Q20.

Expert-verifiedFound in: Page 634

Book edition
Common Core Edition

Author(s)
Ron Larson, Laurie Boswell, Timothy D. Kanold, Lee Stiff

Pages
183 pages

ISBN
9780547587776

**Find the sum or difference.**

** **

**$-\frac{7}{18}-\frac{5}{18}$**

$-\frac{12}{18}$

The provided expression is $-\frac{7}{18}-\frac{5}{18}$.

Since, the denominators of the first and second fractions of the expression $-\frac{7}{18}-\frac{5}{18}$ are the same, add the numerators of both fractions to calculate the sum.

$\begin{array}{c}-\frac{7}{18}-\frac{5}{18}=\frac{-7-5}{18}\text{}\left[\text{write sum of numerators over denominator}\right]\\ -\frac{7}{18}-\frac{5}{18}=-\frac{12}{18}\text{}\left[\text{add}\right]\end{array}$

The sum is $-\frac{12}{18}$.

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