Add Mixed Numbers

EXAMPLE 4.83

Add: $3 \dfrac{4}{9}+2 \dfrac{2}{9}$.

EXAMPLE 4.84

Find the sum: $9 \dfrac{5}{9}+5 \dfrac{7}{9}$.

EXAMPLE 4.85

Add by converting the mixed numbers to improper fractions: $3 \dfrac{7}{8}+4 \dfrac{3}{8}$.