Answer: [tex]20\frac{7}{9}[/tex]
Step-by-step explanation: To add mixed numbers, first add the fractions. In this case, we have [tex]\frac{2}{9} + \frac{5}{9} = \frac{7}{9}[/tex] and now we can add the whole numbers. In this case, we have 15 + 5 which equals 20. Therefore, [tex]15\frac{2}{9} + 5\frac{5}{9} =20\frac{7}{9}[/tex].
