3. Сократите дробь: a) \frac{24}{40} 6) \frac{27}{54} B) \frac{75}{100} г) \frac{125}{1000} д) \frac{53-17}{41-17} e) \frac{55-18}{24-33} ж) \frac{25-32}{40-35} 3) \frac{42-44}{77-12} и) \frac{64-15}{72-30} к) \frac{42-81}{56-27} л) \frac{16-48}{24-32}

а) $$ \frac{24}{40} = \frac{3 \cdot 8}{5 \cdot 8} = \frac{3}{5} $$

б) $$ \frac{27}{54} = \frac{1 \cdot 27}{2 \cdot 27} = \frac{1}{2} $$

в) $$ \frac{75}{100} = \frac{3 \cdot 25}{4 \cdot 25} = \frac{3}{4} $$

г) $$ \frac{125}{1000} = \frac{1 \cdot 125}{8 \cdot 125} = \frac{1}{8} $$

д) $$ \frac{53-17}{41-17} = \frac{36}{24} = \frac{3 \cdot 12}{2 \cdot 12} = \frac{3}{2} = 1\frac{1}{2} $$

е) $$ \frac{55-18}{24-33} = \frac{37}{-9} = - \frac{37}{9} = -4\frac{1}{9} $$

ж) $$ \frac{25-32}{40-35} = \frac{-7}{5} = -\frac{7}{5} = -1\frac{2}{5} $$

з) $$ \frac{42-44}{77-12} = \frac{-2}{65} = -\frac{2}{65} $$

и) $$ \frac{64-15}{72-30} = \frac{49}{42} = \frac{7 \cdot 7}{6 \cdot 7} = \frac{7}{6} = 1\frac{1}{6} $$

к) $$ \frac{42-81}{56-27} = \frac{-39}{29} = -\frac{39}{29} = -1\frac{10}{29} $$

л) $$ \frac{16-48}{24-32} = \frac{-32}{-8} = 4 $$

Ответ: a) 3/5; б) 1/2; в) 3/4; г) 1/8; д) 1 1/2; е) -4 1/9; ж) -1 2/5; з) -2/65; и) 1 1/6; к) -1 10/29; л) 4.