fraction

1/2 to1/35

\(\frac{1}{35}\ to\ \frac{1}{2}= \frac{1}{2}- \frac{1}{35}\) 

\( \frac{1}{2}- \frac{1}{35}= \frac{1\times 35-1\times2}{2\times35}\)   The smallest common multiple is 70.

\({\color{blue}=\frac{33}{70} = 0.045047}\) !