The ratios are equivalent if:
[tex]\frac{2}{1}\equiv\frac{14}{7}[/tex]For example, given a length of 20cm:
[tex]\begin{gathered} 20\times\frac{2}{1}=20\times2=40\operatorname{cm} \\ 20\times\frac{14}{7}=20\times2=40\operatorname{cm} \end{gathered}[/tex]Since:
[tex]40\operatorname{cm}=40\operatorname{cm}[/tex]We can conclude that they are equivalent
