\[3\frac{2}{15} - 1\frac{1}{7} = \frac{47^{\backslash 7}}{15} - \frac{8^{\backslash 5}}{7} =\]
\[= \frac{329}{105} - \frac{120}{105} = \frac{209}{105} = 1\frac{104}{105}\]