\(\frac{7}{9}.\frac{3}{8}+\frac{7}{9}.\frac{5}{8}-\frac{1}{3}\)
\(=\frac{7}{9}.\left(\frac{3}{8}+\frac{5}{8}\right)-\frac{1}{3}\)
\(=\frac{7}{9}.1-\frac{1}{3}\)
\(=\frac{7}{9}-\frac{1}{3}\)
\(=\frac{4}{9}\)
\(=\frac{7}{9}.\left(\frac{3}{8}+\frac{5}{8}\right)-\frac{1}{3}=\frac{7}{9}.1-\frac{1}{3}=\frac{7}{9}-\frac{3}{9}=\frac{4}{9}\)
\(\frac{7}{9}.\frac{3}{8}+\frac{7}{9}.\frac{5}{8}-\frac{1}{3}\)
\(=\frac{7}{9}.\left(\frac{3}{8}+\frac{5}{8}\right)-\frac{1}{3}\)
\(=\frac{7}{9}.1-\frac{1}{3}\)
\(=\frac{7}{9}-\frac{1}{3}\)
\(=\frac{4}{9}\)