Răspuns :
[tex] \frac{4}{9} + \frac{1}{9} : \frac{1}{5} = \\ \\
\frac{4}{9} + \frac{1}{9} * \frac{5}{1} = \\ \\
\frac{4}{9} + \frac{5}{9} = \\ \\
\frac{4 + 5}{9} = \\ \\
\frac{9}{9} = \\ \\ 1
[/tex]