Question

\(\frac{?}{9}+\frac{4}{9}=\frac{5+?}{9}=\frac{?}{?}\)

Answer 1

\(\frac{4}{9}+\frac{4}{9}=\frac{5+3}{9}=\frac{8}{9}\)

Answer 2

\(\frac{5}{9}+\frac{4}{9}=\frac{5+4}{9}=\frac{9}{9}=1\)

Answer 3

\(\frac{5}{9}\)+ \(\frac{4}{9}\) =\(\frac{5+4}{9}\)=\(\frac{9}{9}\)