225)
$\big(\frac{5}{6}+\frac{4}{15}-\frac{9}{8}×\frac{2}{3}\big) : \big(\frac{3}{2}-\frac{6}{5}+\frac{13}{15}\big) = \big(\frac{4}{5}×\frac{5}{6}-\frac{11}{30}\big) : x$
$\big(\frac{5}{6}+\frac{4}{15}-\frac{3}{4}×\frac{1}{1}\big) : \big(\frac{45-36+26}{30}\big) = \big(\frac{2}{1}×\frac{1}{3}-\frac{11}{30}\big) : x$
$\big(\frac{5}{6}+\frac{4}{15}-\frac{3}{4}\big) : \frac{35}{30} = \big(\frac{2}{3}-\frac{11}{30}\big) : x$
$\big(\frac{50+16-45}{60}\big) : \frac{7}{6} = \big(\frac{20-11}{30}\big) : x$
$\frac{21}{60} : \frac{7}{6} = \frac{9}{30} : x$
$\frac{7}{20} : \frac{7}{6} = \frac{3}{10} : x$
$x = \frac{7}{6} × \frac{3}{10} : \frac{7}{20}$
$x = \frac{7}{2} × \frac{1}{10} × \frac{20}{7}$
$x = \frac{1}{2} × \frac{1}{1} × \frac{2}{1}$
$x = \frac{2}{2}$
$x= 1$.