[tex]a) \frac{3}{5} = \frac{9}{15} \\ \: \: \: \: \frac{2}{3} = \frac{8}{12} \\ \: \: \: \frac{12}{16} = \frac{3}{4} \\ \: \: \: \frac{5}{10} = \: \frac{1}{2} \\ \\ b) \frac{3}{4} = \frac{12}{16} \\ \: \: \: \: \frac{4}{8} = \frac{2} {4} \\ \: \: \: \frac{15}{10} = \frac{3}{2} \\ \: \: \: \: \frac{4}{6} = \frac{8}{12} [/tex]
