Задача Задача №3765510
А
А
1.
\[
\frac{2}{9}=\frac{4}{18}=\frac{6}{27}=\frac{8}{36}=\frac{12}{54}=\frac{40}{180}
\]
2.
НОК \(=30\):
\[ \frac16=\frac5{30},\quad \frac1{15}=\frac2{30} \]НОК \(=60\):
\[ \frac5{12}=\frac{25}{60},\quad \frac9{10}=\frac{54}{60} \]НОК \(=35\):
\[ \frac25=\frac{14}{35},\quad \frac37=\frac{15}{35} \]НОК \(=60\):
\[ \frac7{15}=\frac{28}{60},\quad \frac9{20}=\frac{27}{60} \]
