Question

Find the sum or difference.

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

Short answer

$-\frac{12}{18}$

Step-by-step solution

Step 1. Given Information.

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

Step 2. Calculation.

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.

$\begin{array}{c}-\frac{7}{18}-\frac{5}{18}=\frac{-7-5}{18}\left[\text{writesumofnumeratorsoverdenominator}\right]\\ -\frac{7}{18}-\frac{5}{18}=-\frac{12}{18}\left[\text{add}\right]\end{array}$

Step 3. Conclusion.

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