Ответ:
\(\frac{4}{5}-\frac{2}{3}=\frac{12}{15}-\frac{10}{15}=\frac{2}{15}\).
\(\frac{2}{15}\times\frac{7}{2}=\frac{7}{15}\).
Ответ: \(\frac{7}{15}\)
\(\frac{4}{5}-\frac{2}{3}=\frac{12}{15}-\frac{10}{15}=\frac{2}{15}\).
\(\frac{2}{15}\times\frac{7}{2}=\frac{7}{15}\).
Ответ: \(\frac{7}{15}\)