Найди верные равенства.

\dfrac{3}{5}= \dfrac{12}{25}
5
3
​
=
25
12
​


\dfrac{6}{7} = \dfrac{36}{42}
7
6
​
=
42
36
​


\dfrac{400}{1000} = \dfrac{2}{5}
1000
400
​
=
5
2
​