Пж помогите....... мне решить уровнение....... :)))))))))()*)()()()

1) $\frac{3\frac{9}{14}}{2\frac{1}{7}}=\frac{x}{1,5}$
$\frac{51}{14}:\frac{15}{7}=\frac{x}{1,5}$
$\frac{51}{14}:\frac{7}{15}=\frac{x}{1,5}$
$\frac{51}{2*15}=\frac{x}{1,5}$
$\frac{51}{30}=\frac{x}{1,5}$
$\frac{51}{30}*1.5=x$
$\frac{51}{30}*\frac{15}{10}=x$
$\frac{51}{20}=x$
$2\frac{11}{20}=x$
2) $2\frac{\frac{8}{15}}{3\frac{4}{5}}=\frac{1.5}{z}$
$\frac{\frac{38}{15}}{\frac{19}{5}}=\frac{1.5}{z}$
$\frac{38}{15}*\frac{5}{19}=\frac{1.5}{z}$
$\frac{2}{3}=\frac{1.5}{z}$
$z=\frac{1.5}{\frac{2}{3}}$
$z=\frac{\frac{15}{10}}{\frac{2}{3}}$
$z=\frac{15}{10}*\frac{3}{2}$
$z=\frac{45}{20}$
$z=2\frac{5}{20}$
$z=2\frac{1}{4}$