Помогите сократить дроби столбик 3

Решите задачу:

$\frac{12}{15}= \frac{4}{5}$

$\frac{18}{54} = \frac{1}{3}$

$\frac{36}{42} = \frac{6}{7}$

$\frac{48}{42} = \frac{8}{7}$

$\frac{14}{35} = \frac{2}{5}$

$\frac{16}{10} = \frac{8}{5}$

$\frac{18}{15} = \frac{6}{5}$

$\frac{21}{7} = \frac{3}{1}=3$

$\frac{36}{64} = \frac{9}{16}$

$\frac{72}{81} = \frac{8}{9}$

$\frac{45}{60} = \frac{3}{4}$

$\frac{15}{45} = \frac{1}{3}$

$\frac{9}{30} = \frac{3}{10}$

$\frac{17}{51} = \frac{1}{3}$

$\frac{22}{66} = \frac{1}{3}$

$\frac{24}{56} = \frac{3}{7}$

$\frac{21}{300} = \frac{7}{100}$

$\frac{60}{100} = \frac{3}{5}$

$\frac{250}{1000} = \frac{1}{4}$

$\frac{500}{2000} = \frac{1}{4}$

$\frac{120}{150} = \frac{4}{5}$

$\frac{60}{144} = \frac{5}{12}$

$\frac{140}{770} = \frac{2}{11}$