Ответ:
\(2\frac{7}{15}-4\frac{2}{3}=\frac{37}{15}-\frac{14}{3}=\frac{37}{15}-\frac{70}{15}=-\frac{33}{15}=-\frac{11}{5}=-2\frac{1}{5}\).
Ответ: \(-2\frac{1}{5}\).
\(2\frac{7}{15}-4\frac{2}{3}=\frac{37}{15}-\frac{14}{3}=\frac{37}{15}-\frac{70}{15}=-\frac{33}{15}=-\frac{11}{5}=-2\frac{1}{5}\).
Ответ: \(-2\frac{1}{5}\).