Ratios are equivalent to the ratio so lets multiply by 3 numbers to get 3 new ratios. Lets do it:-
[tex] \frac{5*2}{7*2} = \frac{10}{14} [/tex]
[tex] \frac{5*3}{7*3}= \frac{15}{21} [/tex]
[tex] \frac{5*5}{7*5}= \frac{25}{35} [/tex]
So, 3 ratio that are equivalent to
[tex] \frac{10}{14} [/tex]
[tex] \frac{15}{21} [/tex]
[tex] \frac{25}{35} [/tex]
Hope I helped ya!!