Ответ:
\(1\frac{7}{15}=\frac{22}{15}\).
\(\frac{3}{10}-\frac{22}{15}=\frac{9}{30}-\frac{44}{30}=-\frac{35}{30}=-\frac{7}{6}=-1\frac{1}{6}\).
Ответ: \(-1\frac{1}{6}\).
\(1\frac{7}{15}=\frac{22}{15}\).
\(\frac{3}{10}-\frac{22}{15}=\frac{9}{30}-\frac{44}{30}=-\frac{35}{30}=-\frac{7}{6}=-1\frac{1}{6}\).
Ответ: \(-1\frac{1}{6}\).