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

$\frac{47}{45}$
Step 1: $\frac{3}{5}+\frac{4}{9}$ Step 2: The LCM of 5 and 9 is 45. Step 3: Therefore, $\frac{3}{5}+\frac{4}{9}=\frac{3(9)+4(5)}{45}=\frac{27+20}{45}=\frac{47}{45}$.