a/ \(\frac{1}{2}=\frac{114}{228}\)
\(\frac{1}{3}=\frac{76}{228}\)
\(\frac{1}{38}=\frac{6}{228}\)
\(-\frac{1}{12}=-\frac{19}{228}\)
b/ \(\frac{9}{30}=\frac{3}{10}=\frac{60}{200}\)
\(\frac{98}{80}=\frac{49}{40}=\frac{254}{200}\)
\(\frac{15}{1000}=\frac{3}{200}\)