\[\frac{8}{15}\ м = \frac{48}{90}\ м\]
\[\frac{11}{18}\ м = \frac{55}{90}\ м\]
\[\frac{55}{90} - \frac{48}{90} = \frac{7}{90}\ м\]
\[Ответ:ширина\ больше\ на\]
\[\ \frac{7}{90}м.\]