## Algebra: A Combined Approach (4th Edition)

$1 \frac{2}{21}$
1. Find LCD of fractions: The LCD of 3 and 7 is 21. 2. Write as equivalent fractions with denominator of 60. $\frac{2*7}{3*7} + \frac{3*3}{7*3} = \frac{14}{21} + \frac{9}{21}$ 3. Subtract numerators. $\frac{14+9}{21} = \frac{23}{21} = 1 + \frac{2}{21} = 1 \frac{2}{21}$