## Basic College Mathematics (9th Edition)

Step 1: Add the numerators to find the numerator of the sum. Step 2: Write the denominator of the like fractions as the denominator of the sum. Step 3: Write the sum in lowest terms. In example: $\frac{1}{6} + \frac{3}{6} = ?$ Step 1: $1 + 3 = 4$. Step 2: $\frac{ 1 + 3 }{6} = \frac{4}{6}$. Step 3: $\frac{4}{6} = \frac{2}{3}$.